
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>60.如何制作一个三角形</title>
<style>
/*想让上下左右哪个方向的三角形消失的话就设置成transparent*/
div{
width: 0;
border: 100px solid;
border-color: hotpink orange transparent transparent;
}
</style>
</head>
<body>
<div></div>
</body>
</html>