注意:觉得简单的人,别说话,悄悄的。。。。我也纯属是记录
网页默认存在margin值和padding值,并且后面的元素对margin、padding的修改过程中并不会生效,因此在样式设置过程中首先对所有的元素的margin和padding值清0;
代码:*{padding:0px;margin:0px;} //*号代表所有
可以在后面的元素上设置你想要的margin和padding值,都会生效;
举一个例子:(就是因为这一个原因,累死宝宝了,想法是挺符合逻辑的,不过就是不是你想要的)
我是仿照imooc网站的的导航做的(全当练手,因为我是新手,什么都想试一试)
以下是代码部分
<div class="nav"> <ul> <li><a href="#">评论</a></li> <li><a href="#">问答</a></li> <li><a href="#">笔记</a></li> <li><a href="#">同学代码</a></li> </ul> </div><br /><strong>css样式</strong>
*{ margin:0px; padding:0px; } .nav{ border-bottom:1px solid #c0c0c0; width:1000px; height:60px; margin-left:40px; //background-color:#c3ffdd; } ul li{ list-style-type:none; width:120px; float:left; } li a{ display:block; text-decoration:none; color:black; font-family:"微软雅黑"; text-align:center; line-height:60px; } li a:hover,li a:active{ color:#f00; } li a:focus{ border-bottom:2px solid #f00; }<br /><strong>效果图</strong>
先前我是死活标签hover的设置内容顶不到下边框的最左边,设置完代码后就可以了
<br /><br />

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HTMLattributesareessentialforenhancingwebelements'functionalityandappearance.Theyaddinformationtodefinebehavior,appearance,andinteraction,makingwebsitesinteractive,responsive,andvisuallyappealing.Attributeslikesrc,href,class,type,anddisabledtransform

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HTML is used to build websites with clear structure. 1) Use tags such as, and define the website structure. 2) Examples show the structure of blogs and e-commerce websites. 3) Avoid common mistakes such as incorrect label nesting. 4) Optimize performance by reducing HTTP requests and using semantic tags.


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