<!DOCTYPE html>
<html>
<head>
<title>三角形</title>
<meta charset="utf-8" />
<style>
div {
position: absolute;
width: 0;
height: 0;
top: 10px;
right: 52px;
border-style: solid;
border-width: 5px 0 5px 7px;
border-color: transparent transparent transparent #FF6C05;
}
</style>
</head>
<body>
<div></div>
</body>
</html>
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