小颖昨天分享了一篇参考bootstrap中的popover.js的css画消息弹框今天给大家再分享一篇使用:before和:after伪元素画消息弹框的CSS。
画出来是介个酱紫的：
有没有觉得画的萌萌哒，嘻嘻
不贫了，我们一起看代码吧!啦啦啦啦啦啦啦
<!DOCTYPE html>
<html><head>
<meta charset="utf-8">
<title></title>
<style media="screen">
.arrow_box {
position: relative;
border: 1px solid #c2e1f5;
padding: 10px;
width: 200px;
height: 100px;
border-radius: 6px;
box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
margin: 50px;
float: left;
} .arrow_box:before,
.arrow_box:after {
position: absolute;
display: block;
width: 0;
height: 0;
border: solid transparent;
pointer-events: none;
content: "";
border-color: rgba(136, 183, 213, 0);
} .arrow_box.down:before {
border-bottom-color: #c2e1f5;
border-width: 12px;
left: 49%;
margin-left: -10px;
bottom: 100%;
} .arrow_box.down:after {
border-bottom-color: #fff;
border-width: 10px;
left: 50%;
margin-left: -10px;
bottom: 100%;
} .arrow_box.up:before {
border-top-color: #c2e1f5;
border-width: 12px;
left: 49%;
margin-left: -10px;
top: 100%;
} .arrow_box.up:after {
border-top-color: #fff;
border-width: 10px;
left: 50%;
margin-left: -10px;
top: 100%;
} .arrow_box.left:before {
border-left-color: #c2e1f5;
border-width: 13px;
top: 38%;
left: 100%;
} .arrow_box.left:after {
border-left-color: #fff;
border-width: 10px;
top: 41%;
left: 100%;
} .arrow_box.right:before {
border-right-color: #c2e1f5;
border-width: 13px;
top: 38%;
right: 100%;
} .arrow_box.right:after {
border-right-color: #fff;
border-width: 10px;
top: 41%;
right: 100%;
}
</style>
</head><body>
<div class="popovers-body">
<div class="arrow_box down"></div>
<div class="arrow_box up"></div>
<div class="arrow_box left"></div>
<div class="arrow_box right"></div>
</div>
</body></html>
