This article introduces you to the method of using CSS style to write the small triangle on the right side of the selection box through example code. Friends who need it can refer to it. I hope it can help everyone.
The rendering is as follows:
Go directly to the code!
<!DOCTYPE html>
<html lang="en">
<head>
<title>小三角</title>
<style>
.up-triangle{
width:0px;
height:0px;
border-bottom:30px solid #000;
border-left:15px solid transparent;
border-right:15px solid transparent;
margin:100px auto;
}
.down-triangle{
width:0px;
height:0px;
border-top:30px solid #000;
border-left:15px solid transparent;
border-right:15px solid transparent;
margin:100px auto;
}
.left-triangle{
width:0px;
height:0px;
border-right:30px solid #000;
border-top:15px solid transparent;
border-bottom:15px solid transparent;
margin:100px auto;
}
.right-triangle{
width:0px;
height:0px;
border-left:30px solid #000;
border-top:15px solid transparent;
border-bottom:15px solid transparent;
margin:100px auto;
}
</style>
</head>
<body>
<p class="up-triangle"></p>
<p class="down-triangle"></p>
<p class="left-triangle"></p>
<p class="right-triangle"></p>
</body>
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