html tutorial

带箭头提示框总结实例

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jun 16, 2016 am 08:39 AM

无论是提示框还是导航栏都能看到如上图所示的带有箭头的框框，这种箭头可以通过背景图片或者是css来实现，本文介绍三种通过css实现带箭头的提示框。

通过border属性
思路：两个三角形，通过定位使两个三角形相差1px作为边框。
CSS3 transfrom
思路：先做一个两条边相同颜色的正方形，然后旋转一定角度就是三角形了
特殊字符'♦'
思路：特殊字符漏出上半部分，看上去就像三角形了

一、通过border属性：

我们先做一个宽和高都是10px的div，边框也是10px，

<span style="color: #008080;">1</span> <span style="color: #800000;">width: 10px;
</span><span style="color: #008080;">2</span> <span style="color: #800000;">height: 10px;
</span><span style="color: #008080;">3</span> <span style="color: #800000;">border: 10px solid;
</span><span style="color: #008080;">4</span> <span style="color: #800000;">border-color: red green yellow blue; </span>

如下图：

图中间空白是我们设置的宽和高，如果设置为0px，会出现什么情况呢？，如下图：

这时候我们就可以通过设置它的左右和下边框的颜色都设成透明或和背景颜色相同的颜色，就出来我们想要的三角形了。如下图：

现在我们来实现第一幅图上的效果：

css：

<span style="color: #008080;"> 1</span> <span style="color: #800000;">.info </span>{
<span style="color: #008080;"> 2</span> <span style="color: #ff0000;">        margin-top</span>:<span style="color: #0000ff;"> 50px</span>;
<span style="color: #008080;"> 3</span> <span style="color: #ff0000;">        position</span>:<span style="color: #0000ff;">relative</span>;
<span style="color: #008080;"> 4</span> <span style="color: #ff0000;">        width</span>:<span style="color: #0000ff;">200px</span>;
<span style="color: #008080;"> 5</span> <span style="color: #ff0000;">        height</span>:<span style="color: #0000ff;">50px</span>;
<span style="color: #008080;"> 6</span> <span style="color: #ff0000;">        line-height</span>:<span style="color: #0000ff;">60px</span>;
<span style="color: #008080;"> 7</span> <span style="color: #ff0000;">        background</span>:<span style="color: #0000ff;">#F6F1B3</span>;
<span style="color: #008080;"> 8</span> <span style="color: #ff0000;">        box-shadow</span>:<span style="color: #0000ff;">1px 2px 3px #E9D985</span>;
<span style="color: #008080;"> 9</span> <span style="color: #ff0000;">        border</span>:<span style="color: #0000ff;">1px solid #DACE7C</span>;
<span style="color: #008080;">10</span> <span style="color: #ff0000;">        border-radius</span>:<span style="color: #0000ff;">4px</span>;
<span style="color: #008080;">11</span> <span style="color: #ff0000;">        text-align</span>:<span style="color: #0000ff;">center</span>;
<span style="color: #008080;">12</span> <span style="color: #ff0000;">        color</span>:<span style="color: #0000ff;">red</span>;
<span style="color: #008080;">13</span>     }
<span style="color: #008080;">14</span> <span style="color: #800000;">    .nav </span>{
<span style="color: #008080;">15</span> <span style="color: #ff0000;">        position</span>:<span style="color: #0000ff;">absolute</span>;
<span style="color: #008080;">16</span> <span style="color: #ff0000;">        left</span>:<span style="color: #0000ff;">30px</span>;
<span style="color: #008080;">17</span> <span style="color: #ff0000;">        overflow</span>:<span style="color: #0000ff;">hidden</span>;
<span style="color: #008080;">18</span> <span style="color: #ff0000;">        width</span>:<span style="color: #0000ff;">0</span>;
<span style="color: #008080;">19</span> <span style="color: #ff0000;">        height</span>:<span style="color: #0000ff;">0</span>;
<span style="color: #008080;">20</span> <span style="color: #ff0000;">        border-width</span>:<span style="color: #0000ff;">10px</span>;
<span style="color: #008080;">21</span> <span style="color: #ff0000;">        border-style</span>:<span style="color: #0000ff;">solid dashed dashed dashed</span>;
<span style="color: #008080;">22</span>     }
<span style="color: #008080;">23</span> <span style="color: #800000;">    .nav-border </span>{
<span style="color: #008080;">24</span> <span style="color: #ff0000;">        top</span>:<span style="color: #0000ff;">-20px</span>;
<span style="color: #008080;">25</span> <span style="color: #ff0000;">        border-color</span>:<span style="color: #0000ff;">transparent transparent #DACE7C transparent</span>;
<span style="color: #008080;">26</span>     }
<span style="color: #008080;">27</span> <span style="color: #800000;">    .nav-background </span>{
<span style="color: #008080;">28</span> <span style="color: #ff0000;">        top</span>:<span style="color: #0000ff;">-19px</span>;
<span style="color: #008080;">29</span> <span style="color: #ff0000;">        border-color</span>:<span style="color: #0000ff;">transparent transparent #F6F1B3 transparent</span>;
<span style="color: #008080;">30</span>     }

html：

<span style="color: #008080;">1</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="info"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">2</span>     <span style="color: #0000ff;"><span style="color: #800000;">span</span><span style="color: #0000ff;">></span>提示信息<span style="color: #0000ff;"></span><span style="color: #800000;">span</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">3</span>     <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="nav nav-border"</span><span style="color: #0000ff;">></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">4</span>     <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="nav nav-background"</span><span style="color: #0000ff;">></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">5</span> <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span></span></span></span></span>

二、 CSS3 transfrom

我们首先制作一个两条相邻的边框颜色相同，其他两条边边框为0px的div方框。如图：

在将方框旋转45度就可以实现三角提示效果了。

css：

<span style="color: #008080;"> 1</span> <span style="color: #800000;">.info </span>{
<span style="color: #008080;"> 2</span> <span style="color: #ff0000;">        margin-top    </span>:<span style="color: #0000ff;"> 50px</span>;
<span style="color: #008080;"> 3</span> <span style="color: #ff0000;">        position      </span>:<span style="color: #0000ff;">relative</span>;
<span style="color: #008080;"> 4</span> <span style="color: #ff0000;">        width         </span>:<span style="color: #0000ff;">200px</span>;
<span style="color: #008080;"> 5</span> <span style="color: #ff0000;">        height        </span>:<span style="color: #0000ff;">50px</span>;
<span style="color: #008080;"> 6</span> <span style="color: #ff0000;">        line-height   </span>:<span style="color: #0000ff;">60px</span>;
<span style="color: #008080;"> 7</span> <span style="color: #ff0000;">        background    </span>:<span style="color: #0000ff;">#F6F1B3</span>;
<span style="color: #008080;"> 8</span> <span style="color: #ff0000;">        box-shadow    </span>:<span style="color: #0000ff;">1px 2px 3px #E9D985</span>;
<span style="color: #008080;"> 9</span> <span style="color: #ff0000;">        border        </span>:<span style="color: #0000ff;">1px solid #DACE7C</span>;
<span style="color: #008080;">10</span> <span style="color: #ff0000;">        border-radius </span>:<span style="color: #0000ff;">4px</span>;
<span style="color: #008080;">11</span> <span style="color: #ff0000;">        text-align    </span>:<span style="color: #0000ff;">center</span>;
<span style="color: #008080;">12</span> <span style="color: #ff0000;">        color         </span>:<span style="color: #0000ff;">red</span>;
<span style="color: #008080;">13</span>     }
<span style="color: #008080;">14</span> <span style="color: #800000;">    .nav </span>{
<span style="color: #008080;">15</span> <span style="color: #ff0000;">        position          </span>:<span style="color: #0000ff;">absolute</span>;
<span style="color: #008080;">16</span> <span style="color: #ff0000;">        top               </span>:<span style="color: #0000ff;">-8px</span>;
<span style="color: #008080;">17</span> <span style="color: #ff0000;">        left              </span>:<span style="color: #0000ff;">30px</span>;
<span style="color: #008080;">18</span> <span style="color: #ff0000;">        overflow          </span>:<span style="color: #0000ff;">hidden</span>;
<span style="color: #008080;">19</span> <span style="color: #ff0000;">        width             </span>:<span style="color: #0000ff;">13px</span>;
<span style="color: #008080;">20</span> <span style="color: #ff0000;">        height            </span>:<span style="color: #0000ff;">13px</span>;
<span style="color: #008080;">21</span> <span style="color: #ff0000;">        background        </span>:<span style="color: #0000ff;">#F6F1B3</span>;
<span style="color: #008080;">22</span> <span style="color: #ff0000;">        border-left       </span>:<span style="color: #0000ff;">1px solid #DACE7C</span>;
<span style="color: #008080;">23</span> <span style="color: #ff0000;">        border-top        </span>:<span style="color: #0000ff;">1px solid #DACE7C</span>;
<span style="color: #008080;">24</span> <span style="color: #ff0000;">        -webkit-transform </span>:<span style="color: #0000ff;">rotate(45deg)</span>;
<span style="color: #008080;">25</span> <span style="color: #ff0000;">        -moz-transform    </span>:<span style="color: #0000ff;">rotate(45deg)</span>;
<span style="color: #008080;">26</span> <span style="color: #ff0000;">        -o-transform      </span>:<span style="color: #0000ff;">rotate(45deg)</span>;
<span style="color: #008080;">27</span> <span style="color: #ff0000;">        transform         </span>:<span style="color: #0000ff;">rotate(45deg)</span>;
<span style="color: #008080;">28</span>     }

html：

<span style="color: #008080;">1</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="info"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">2</span>     <span style="color: #0000ff;"><span style="color: #800000;">span</span><span style="color: #0000ff;">></span>提示信息<span style="color: #0000ff;"></span><span style="color: #800000;">span</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">3</span>     <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="nav"</span><span style="color: #0000ff;">></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">4</span> <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span></span></span></span>

三、特殊字符'♦'

'♦'是一个特殊字符，也就相当于一个字，所以大小是通过font-size来设置，实现第一幅图的效果：

css：

<span style="color: #008080;"> 1</span> <span style="color: #800000;">.info </span>{
<span style="color: #008080;"> 2</span> <span style="color: #ff0000;">        margin-top</span>:<span style="color: #0000ff;"> 50px</span>;
<span style="color: #008080;"> 3</span> <span style="color: #ff0000;">        position</span>:<span style="color: #0000ff;">relative</span>;
<span style="color: #008080;"> 4</span> <span style="color: #ff0000;">        width</span>:<span style="color: #0000ff;">200px</span>;
<span style="color: #008080;"> 5</span> <span style="color: #ff0000;">        height</span>:<span style="color: #0000ff;">50px</span>;
<span style="color: #008080;"> 6</span> <span style="color: #ff0000;">        line-height</span>:<span style="color: #0000ff;">60px</span>;
<span style="color: #008080;"> 7</span> <span style="color: #ff0000;">        background</span>:<span style="color: #0000ff;">#F6F1B3</span>;
<span style="color: #008080;"> 8</span> <span style="color: #ff0000;">        box-shadow</span>:<span style="color: #0000ff;">1px 2px 3px #E9D985</span>;
<span style="color: #008080;"> 9</span> <span style="color: #ff0000;">        border</span>:<span style="color: #0000ff;">1px solid #DACE7C</span>;
<span style="color: #008080;">10</span> <span style="color: #ff0000;">        border-radius</span>:<span style="color: #0000ff;">4px</span>;
<span style="color: #008080;">11</span> <span style="color: #ff0000;">        text-align</span>:<span style="color: #0000ff;">center</span>;
<span style="color: #008080;">12</span> <span style="color: #ff0000;">        color</span>:<span style="color: #0000ff;">red</span>;
<span style="color: #008080;">13</span>     }
<span style="color: #008080;">14</span> <span style="color: #800000;">    .nav </span>{
<span style="color: #008080;">15</span> <span style="color: #ff0000;">        position</span>:<span style="color: #0000ff;">absolute</span>;
<span style="color: #008080;">16</span> <span style="color: #ff0000;">        left</span>:<span style="color: #0000ff;">30px</span>;
<span style="color: #008080;">17</span> <span style="color: #ff0000;">        overflow</span>:<span style="color: #0000ff;">hidden</span>;
<span style="color: #008080;">18</span> <span style="color: #ff0000;">        width</span>:<span style="color: #0000ff;">24px</span>;
<span style="color: #008080;">19</span> <span style="color: #ff0000;">        height</span>:<span style="color: #0000ff;">24px</span>;
<span style="color: #008080;">20</span> <span style="color: #ff0000;">        font</span>:<span style="color: #0000ff;">normal 24px "微软雅黑"</span>;
<span style="color: #008080;">21</span>     }
<span style="color: #008080;">22</span> <span style="color: #800000;">    .nav-border </span>{
<span style="color: #008080;">23</span> <span style="color: #ff0000;">        top</span>:<span style="color: #0000ff;">-17px</span>;
<span style="color: #008080;">24</span> <span style="color: #ff0000;">        color</span>:<span style="color: #0000ff;">#DACE7C</span>;
<span style="color: #008080;">25</span>     }
<span style="color: #008080;">26</span> <span style="color: #800000;">    .nav-background </span>{
<span style="color: #008080;">27</span> <span style="color: #ff0000;">        top</span>:<span style="color: #0000ff;">-16px</span>;
<span style="color: #008080;">28</span> <span style="color: #ff0000;">        color</span>:<span style="color: #0000ff;">#F6F1B3</span>;
<span style="color: #008080;">29</span>     }

html：

<span style="color: #008080;">1</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="info"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">2</span>     <span style="color: #0000ff;"><span style="color: #800000;">span</span><span style="color: #0000ff;">></span>提示信息<span style="color: #0000ff;"></span><span style="color: #800000;">span</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">3</span>     <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="nav nav-border"</span><span style="color: #0000ff;">></span>♦<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">4</span>     <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="nav nav-background"</span><span style="color: #0000ff;">></span>♦<span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">5</span> <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span></span></span></span></span>

下面是一个兼容IE5.5+,chrome,Firfox等浏览器的一个demo，如果你有用到可以直接考到自己的项目中。

<span style="color: #008080;"> 1</span> <span style="color: #0000ff;"><span style="color: #ff00ff;">DOCTYPE html</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 2</span> <span style="color: #0000ff;"><span style="color: #800000;">html</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 3</span> <span style="color: #0000ff;"><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 4</span>  <span style="color: #0000ff;"><span style="color: #800000;">title</span><span style="color: #0000ff;">></span><span style="color: #800000;">title</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 5</span>  <span style="color: #0000ff;"><span style="color: #800000;">meta </span><span style="color: #ff0000;">http-equiv</span><span style="color: #0000ff;">="Content-Type"</span><span style="color: #ff0000;"> content</span><span style="color: #0000ff;">="text/html;charset=utf-8"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 6</span>  <span style="color: #0000ff;"><span style="color: #800000;">style</span><span style="color: #0000ff;">></span>
<span style="color: #008080;"> 7</span> <span style="background-color: #f5f5f5; color: #800000;">  div.container</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;"> 8</span> <span style="background-color: #f5f5f5; color: #ff0000;">        position         </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">absolute</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;"> 9</span> <span style="background-color: #f5f5f5; color: #ff0000;">        top              </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">30px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">10</span> <span style="background-color: #f5f5f5; color: #ff0000;">        left             </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">40px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">11</span> <span style="background-color: #f5f5f5; color: #ff0000;">        font-size        </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 9pt</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">12</span> <span style="background-color: #f5f5f5; color: #ff0000;">        display          </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">block</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">13</span> <span style="background-color: #f5f5f5; color: #ff0000;">        height           </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">100px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">14</span> <span style="background-color: #f5f5f5; color: #ff0000;">        width            </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">200px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">15</span> <span style="background-color: #f5f5f5; color: #ff0000;">        background-color </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">transparent</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">16</span> <span style="background-color: #f5f5f5; color: #ff0000;">        *border          </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">1px solid #666</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">17</span>     <span style="background-color: #f5f5f5; color: #000000;">}</span> 
<span style="color: #008080;">18</span> <span style="background-color: #f5f5f5; color: #800000;">    s</span><span style="background-color: #f5f5f5; color: #000000;">{</span> 
<span style="color: #008080;">19</span> <span style="background-color: #f5f5f5; color: #ff0000;">        position     </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">absolute</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">20</span> <span style="background-color: #f5f5f5; color: #ff0000;">        top          </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">-20px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">21</span> <span style="background-color: #f5f5f5; color: #ff0000;">        *top         </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">-22px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">22</span> <span style="background-color: #f5f5f5; color: #ff0000;">        left         </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">20px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">23</span> <span style="background-color: #f5f5f5; color: #ff0000;">        display      </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">block</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">24</span> <span style="background-color: #f5f5f5; color: #ff0000;">        height       </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">25</span> <span style="background-color: #f5f5f5; color: #ff0000;">        width        </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">26</span> <span style="background-color: #f5f5f5; color: #ff0000;">        font-size    </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 0</span><span style="background-color: #f5f5f5; color: #000000;">;</span>  
<span style="color: #008080;">27</span> <span style="background-color: #f5f5f5; color: #ff0000;">        line-height  </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 0</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">28</span> <span style="background-color: #f5f5f5; color: #ff0000;">        border-color </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">transparent transparent #666 transparent</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">29</span> <span style="background-color: #f5f5f5; color: #ff0000;">        border-style </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">dashed dashed solid dashed</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">30</span> <span style="background-color: #f5f5f5; color: #ff0000;">        border-width </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">10px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">31</span>     <span style="background-color: #f5f5f5; color: #000000;">}</span> 
<span style="color: #008080;">32</span> <span style="background-color: #f5f5f5; color: #800000;">    i</span><span style="background-color: #f5f5f5; color: #000000;">{</span>
<span style="color: #008080;">33</span> <span style="background-color: #f5f5f5; color: #ff0000;">        position     </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">absolute</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">34</span> <span style="background-color: #f5f5f5; color: #ff0000;">        top          </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">-9px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">35</span> <span style="background-color: #f5f5f5; color: #ff0000;">        *top         </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">-9px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">36</span> <span style="background-color: #f5f5f5; color: #ff0000;">        left         </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">-10px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">37</span> <span style="background-color: #f5f5f5; color: #ff0000;">        display      </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">block</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">38</span> <span style="background-color: #f5f5f5; color: #ff0000;">        height       </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">39</span> <span style="background-color: #f5f5f5; color: #ff0000;">        width        </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">0</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">40</span> <span style="background-color: #f5f5f5; color: #ff0000;">        font-size    </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 0</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">41</span> <span style="background-color: #f5f5f5; color: #ff0000;">        line-height  </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 0</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">42</span> <span style="background-color: #f5f5f5; color: #ff0000;">        border-color </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">transparent transparent #fff transparent</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">43</span> <span style="background-color: #f5f5f5; color: #ff0000;">        border-style </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">dashed dashed solid dashed</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">44</span> <span style="background-color: #f5f5f5; color: #ff0000;">        border-width </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">10px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">45</span>     <span style="background-color: #f5f5f5; color: #000000;">}</span> 
<span style="color: #008080;">46</span> <span style="background-color: #f5f5f5; color: #800000;">    .content</span><span style="background-color: #f5f5f5; color: #000000;">{</span> 
<span style="color: #008080;">47</span> <span style="background-color: #f5f5f5; color: #ff0000;">        border                </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">1px solid #666</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">48</span> <span style="background-color: #f5f5f5; color: #ff0000;">        -moz-border-radius    </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">3px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">49</span> <span style="background-color: #f5f5f5; color: #ff0000;">        -webkit-border-radius </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">3px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">50</span> <span style="background-color: #f5f5f5; color: #ff0000;">        position              </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">absolute</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">51</span> <span style="background-color: #f5f5f5; color: #ff0000;">        background-color      </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">#fff</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">52</span> <span style="background-color: #f5f5f5; color: #ff0000;">        width                 </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">100%</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">53</span> <span style="background-color: #f5f5f5; color: #ff0000;">        height                </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">100%</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">54</span> <span style="background-color: #f5f5f5; color: #ff0000;">        padding               </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">5px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">55</span> <span style="background-color: #f5f5f5; color: #ff0000;">        *top                  </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">-2px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">56</span> <span style="background-color: #f5f5f5; color: #ff0000;">        *border-top           </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">1px solid #666</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">57</span> <span style="background-color: #f5f5f5; color: #ff0000;">        *border-top           </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">1px solid #666</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">58</span> <span style="background-color: #f5f5f5; color: #ff0000;">        *border-left          </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">none</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">59</span> <span style="background-color: #f5f5f5; color: #ff0000;">        *border-right         </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">none</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">60</span> <span style="background-color: #f5f5f5; color: #ff0000;">        *height               </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;">102px</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">61</span> <span style="background-color: #f5f5f5; color: #ff0000;">        box-shadow            </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 3px 3px 4px #999</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">62</span> <span style="background-color: #f5f5f5; color: #ff0000;">        -moz-box-shadow       </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 3px 3px 4px #999</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">63</span> <span style="background-color: #f5f5f5; color: #ff0000;">        -webkit-box-shadow    </span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> 3px 3px 4px #999</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">64</span>         <span style="background-color: #f5f5f5; color: #008000;">/*</span><span style="background-color: #f5f5f5; color: #008000;"> For IE 5.5 - 7 </span><span style="background-color: #f5f5f5; color: #008000;">*/</span>
<span style="color: #008080;">65</span> <span style="background-color: #f5f5f5; color: #ff0000;">        filter</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> progid:DXImageTransform.Microsoft.Shadow(Strength=4, Direction=135, Color='#999999')</span><span style="background-color: #f5f5f5; color: #000000;">;</span> 
<span style="color: #008080;">66</span>         <span style="background-color: #f5f5f5; color: #008000;">/*</span><span style="background-color: #f5f5f5; color: #008000;"> For IE 8 </span><span style="background-color: #f5f5f5; color: #008000;">*/</span> 
<span style="color: #008080;">67</span> <span style="background-color: #f5f5f5; color: #ff0000;">        -ms-filter</span><span style="background-color: #f5f5f5; color: #000000;">:</span><span style="background-color: #f5f5f5; color: #0000ff;"> "progid:DXImageTransform.Microsoft.Shadow(Strength=4, Direction=135, Color='#999999')"</span><span style="background-color: #f5f5f5; color: #000000;">;</span>  
<span style="color: #008080;">68</span>     <span style="background-color: #f5f5f5; color: #000000;">}</span>
<span style="color: #008080;">69</span>  <span style="color: #0000ff;"></span><span style="color: #800000;">style</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">70</span> <span style="color: #0000ff;"></span><span style="color: #800000;">head</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">71</span> <span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">72</span> <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="container"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">73</span>         <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">class</span><span style="color: #0000ff;">="content"</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">74</span> <span style="color: #000000;">            hello world!
</span><span style="color: #008080;">75</span>         <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">76</span>         <span style="color: #0000ff;"><span style="color: #800000;">s</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">77</span>             <span style="color: #0000ff;"><span style="color: #800000;">i</span><span style="color: #0000ff;">></span><span style="color: #800000;">i</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">78</span>         <span style="color: #0000ff;"></span><span style="color: #800000;">s</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">79</span>  <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">80</span> <span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
<span style="color: #008080;">81</span> <span style="color: #0000ff;"></span><span style="color: #800000;">html</span><span style="color: #0000ff;">></span></span></span></span></span></span></span></span></span></span></span></span>

效果图：

小结：

　　带箭头的提示框给用户的交互带来很好的效果，本文介绍了三个方法，如果你还有其他方法可以@me，我会非常感激。希望本文能够对你有些帮助。

Kenyataan

Kandungan artikel ini disumbangkan secara sukarela oleh netizen, dan hak cipta adalah milik pengarang asal. Laman web ini tidak memikul tanggungjawab undang-undang yang sepadan. Jika anda menemui sebarang kandungan yang disyaki plagiarisme atau pelanggaran, sila hubungi admin@php.cn

Artikel Berkaitan

Dari teks ke laman web: Kekuatan HTMLApr 13, 2025 am 12:07 AM

HTML adalah bahasa yang digunakan untuk membina laman web, menentukan struktur laman web dan kandungan melalui tag dan atribut. 1) HTML menganjurkan struktur dokumen melalui tag, seperti,. 2) Penyemak imbas menghancurkan HTML untuk membina DOM dan menjadikan laman web. 3) Ciri -ciri baru HTML5, seperti, meningkatkan fungsi multimedia. 4) Kesilapan biasa termasuk label yang tidak terkawal dan nilai atribut yang tidak disebutkan. 5) Cadangan pengoptimuman termasuk menggunakan tag semantik dan mengurangkan saiz fail.

Memahami HTML, CSS, dan JavaScript: Panduan PemulaApr 12, 2025 am 12:02 AM

WebDevelopmentReliesOnhtml, CSS, andjavascript: 1) HtmlStructuresContent, 2) CSSStylesit, dan3) JavaScriptaddsInteractivity, Formingthebasisofmodernwebexperiences.

Peranan HTML: Penstrukturan Kandungan WebApr 11, 2025 am 12:12 AM

Peranan HTML adalah untuk menentukan struktur dan kandungan laman web melalui tag dan atribut. 1. HTML menganjurkan kandungan melalui tag seperti, menjadikannya mudah dibaca dan difahami. 2. Gunakan tag semantik seperti, dan lain -lain untuk meningkatkan kebolehcapaian dan SEO. 3. Mengoptimumkan kod HTML boleh meningkatkan kelajuan pemuatan laman web dan pengalaman pengguna.

HTML dan Kod: Melihat lebih dekat pada istilahApr 10, 2025 am 09:28 AM

Htmlisaspecifictypeofcodefocusedonstructuringwebcontent, manakala "kod" secara meluas ini

HTML, CSS, dan JavaScript: Alat penting untuk pemaju webApr 09, 2025 am 12:12 AM

HTML, CSS dan JavaScript adalah tiga tiang pembangunan web. 1. HTML mentakrifkan struktur laman web dan menggunakan tag seperti, dan sebagainya. 2. CSS mengawal gaya laman web, menggunakan pemilih dan atribut seperti warna, saiz font, dan lain-lain.

Peranan HTML, CSS, dan JavaScript: Tanggungjawab TerasApr 08, 2025 pm 07:05 PM

HTML mentakrifkan struktur web, CSS bertanggungjawab untuk gaya dan susun atur, dan JavaScript memberikan interaksi dinamik. Ketiga melaksanakan tugas mereka dalam pembangunan web dan bersama -sama membina laman web yang berwarna -warni.

Adakah HTML mudah belajar untuk pemula?Apr 07, 2025 am 12:11 AM

HTML sesuai untuk pemula kerana mudah dan mudah dipelajari dan dapat melihat hasilnya dengan cepat. 1) Keluk pembelajaran HTML adalah lancar dan mudah dimulakan. 2) Hanya menguasai tag asas untuk mula membuat laman web. 3) Fleksibiliti yang tinggi dan boleh digunakan dalam kombinasi dengan CSS dan JavaScript. 4) Sumber pembelajaran yang kaya dan alat moden menyokong proses pembelajaran.

Apakah contoh tag permulaan dalam html?Apr 06, 2025 am 12:04 AM

Anexampleofastartartingtaginhtmlis, yangbeginsaparagraph.startingtagsareessentialinhtmlasttheyinitiateelements, definetheirtypes, andarecrucialforstructuringwebpagesandconstructionthedom.

See all articles

Alat AI Hot

Undresser.AI Undress

Apl berkuasa AI untuk mencipta foto bogel yang realistik

AI Clothes Remover

Alat AI dalam talian untuk mengeluarkan pakaian daripada foto.

Undress AI Tool

Gambar buka pakaian secara percuma

Clothoff.io

Penyingkiran pakaian AI

AI Hentai Generator

Menjana ai hentai secara percuma.

Tunjukkan Lagi

Artikel Panas

R.E.P.O. Kristal tenaga dijelaskan dan apa yang mereka lakukan (kristal kuning)

3 minggu yang laluBy尊渡假赌尊渡假赌尊渡假赌

R.E.P.O. Tetapan grafik terbaik

3 minggu yang laluBy尊渡假赌尊渡假赌尊渡假赌

Assassin's Creed Shadows: Penyelesaian Riddle Seashell

2 minggu yang laluByDDD

R.E.P.O. Cara Memperbaiki Audio Jika anda tidak dapat mendengar sesiapa

3 minggu yang laluBy尊渡假赌尊渡假赌尊渡假赌

WWE 2K25: Cara Membuka Segala -galanya Di Myrise

4 minggu yang laluBy尊渡假赌尊渡假赌尊渡假赌

Tunjukkan Lagi

Alat panas

Versi Mac WebStorm

Alat pembangunan JavaScript yang berguna

SublimeText3 versi Cina

Versi Cina, sangat mudah digunakan

Dreamweaver Mac版

Alat pembangunan web visual

mPDF

mPDF ialah perpustakaan PHP yang boleh menjana fail PDF daripada HTML yang dikodkan UTF-8. Pengarang asal, Ian Back, menulis mPDF untuk mengeluarkan fail PDF "dengan cepat" dari tapak webnya dan mengendalikan bahasa yang berbeza. Ia lebih perlahan dan menghasilkan fail yang lebih besar apabila menggunakan fon Unicode daripada skrip asal seperti HTML2FPDF, tetapi menyokong gaya CSS dsb. dan mempunyai banyak peningkatan. Menyokong hampir semua bahasa, termasuk RTL (Arab dan Ibrani) dan CJK (Cina, Jepun dan Korea). Menyokong elemen peringkat blok bersarang (seperti P, DIV),

Muat turun versi mac editor Atom

Editor sumber terbuka yang paling popular

Tunjukkan Lagi

Topik panas

Di manakah pintu masuk log masuk untuk e-mel gmail?

7478

Tutorial CakePHP

1377

Apakah format nama akaun stim

kunci pengaktifan win11 kekal

Sambungan NYT menunjukkan dan jawapan

Tunjukkan Lagi