利用边框制作三角形
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2024-02-20 14:22:16
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
span{
display: block;
}
#box1{
width: 0px;
height: 0px;
border: 20px solid transparent;
border-bottom:20px solid blue;
}
#box2{
width: 0px;
height: 0px;
border: 20px solid transparent;
border-top:20px solid blue;
}
#box3{
width: 0px;
height: 0px;
border: 20px solid transparent;
border-left:20px solid red;
}
#box4{
width: 0px;
height: 0px;
border: 20px solid transparent;
border-right:20px solid red;
}
#box5{
width: 0px;
height: 0px;
border: 20px solid transparent;
border-top:20px solid red;
border-left:20px solid red;
}
#box6{
width: 0px;
height: 0px;
border: 20px solid transparent;
border-bottom:20px solid red;
border-left:20px solid red;
}
#box7{
width: 0px;
height: 0px;
border: 20px solid transparent;
border-top:20px solid red;
border-right:20px solid red;
}
#box8{
width: 0px;
height: 0px;
border: 20px solid transparent;
border-bottom:20px solid red;
border-right:20px solid red;
}
</style>
</head>
<body>
上三角：<span id="box1"></span>
下三角：<span id="box2"></span>
左三角：<span id="box3"></span>
右三角：<span id="box4"></span>
左上角：<span id="box5"></span>
左下角：<span id="box6"></span>
右上角：<span id="box7"></span>
右下角：<span id="box8"></span>
</body>
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