


I often see such sharp corners. I didn’t understand them before and thought they were all made with pictures. Later I was surprised to find that many of them were made with CSS. They are both beautiful and resource-saving. It’s really the best of both worlds!
So, how to achieve this effect using CSS? First, let’s write a simple code:
The code is as follows:
<p class="arrow"></p> <style type="text/css"> .arrow { width:0; height:0; font-size:0; border:solid 10px #000; }</style>
Here, we can get a black square, which is actually composed of a border, because the width and height of p are 0,. So, let’s take a closer look at what the top, bottom, left, and right borders of p look like when its width and height are both 0. Next, we set the colors of each side of the border to different colors:
The code is as follows :
<p class="arrow"></p> <style type="text/css"> .arrow { width:0; height:0; font-size:0; border:solid 10px; border-color :#f00 #0f0 #00f #000; } </style>
We found that when the width and height of p are both 0, its entire border is composed of four triangles, with each side being a triangle. Then we can take advantage of this feature, Let’s make cute little sharp corners. We only need to set the color of the unnecessary three-sided border (triangle) to be the same as the background, so that you can only see the triangle you want, and then use positioning to adjust the position. The specific code is as follows:
The code is as follows:
<p class="s end "> <p class="arrow"></p> </p> <style type="text/css"> body { background :#4D4948; } .send { position:relative; width:150px; height:35px; background:#F8C301; border-radius:5px; /* 圆角 */ margin:30px auto 0; } .send .arrow { position:absolute; top:5px; right:-16px; /* 圆角的位置需要细心 调试 哦 */ width:0; height:0; font-size:0; border:solid 8px; border-color:#4D4948 #4D4948 #4D4948 #F8C301; } </style>
You are done, the effect is as shown below:
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The above is the detailed content of Use CSS to create small sharp corners and bubble effects in the chat box. For more information, please follow other related articles on the PHP Chinese website!

在css中,可用list-style-type属性来去掉ul的圆点标记,语法为“ul{list-style-type:none}”;list-style-type属性可设置列表项标记的类型,当值为“none”可不定义标记,也可去除已有标记。

区别是:css是层叠样式表单,是将样式信息与网页内容分离的一种标记语言,主要用来设计网页的样式,还可以对网页各元素进行格式化;xml是可扩展标记语言,是一种数据存储语言,用于使用简单的标记描述数据,将文档分成许多部件并对这些部件加以标识。

在css中,可以利用cursor属性实现鼠标隐藏效果,该属性用于定义鼠标指针放在一个元素边界范围内时所用的光标形状,当属性值设置为none时,就可以实现鼠标隐藏效果,语法为“元素{cursor:none}”。

在css中,rtl是“right-to-left”的缩写,是从右往左的意思,指的是内联内容从右往左依次排布,是direction属性的一个属性值;该属性规定了文本的方向和书写方向,语法为“元素{direction:rtl}”。

在css中,可以利用“font-style”属性设置i元素不是斜体样式,该属性用于指定文本的字体样式,当属性值设置为“normal”时,会显示元素的标准字体样式,语法为“i元素{font-style:normal}”。

转换方法:1、给英文元素添加“text-transform: uppercase;”样式,可将所有的英文字母都变成大写;2、给英文元素添加“text-transform:capitalize;”样式,可将英文文本中每个单词的首字母变为大写。

在css3中,可以用“transform-origin”属性设置rotate的旋转中心点,该属性可更改转换元素的位置,第一个参数设置x轴的旋转位置,第二个参数设置y轴旋转位置,语法为“transform-origin:x轴位置 y轴位置”。


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