<style type="text/css">
.chat-msg{
width: 300px;
height: 80px;
border: 1px solid #ccc;
border-radius: 8px;
position: relative;
filter: drop-shadow(0 0 2px #999);
background: #fff;
}
.chat-msg:before{
content: '';
position: absolute;
left: -10px;
top: 50%;
transform: translateY(-50%);
border-top: 6px solid transparent;
border-bottom: 6px solid transparent;
border-right: 10px solid #ccc;
}
.chat-msg:after{
content: '';
position: absolute;
left: -8px;
top: 50%;
transform: translateY(-50%);
border-top: 6px solid transparent;
border-bottom: 6px solid transparent;
border-right: 10px solid #fff;
}
</style>
<div class="chat-msg">hi,亲</div>
画一个有边缘色的三角形
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转载自blog.csdn.net/qq_31680395/article/details/80115023
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