<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
*{
margin:0;
padding:0;
}
.line{
border-bottom: 1px solid #ff8d36;
display: inline-block;
width: 5%;
margin: 0 0 7px 0;
}
</style>
</head>
<body>
<span class="line"></span>
<span class="line"></span>
<span class="line"></span>
</body>
</html>結果如下：
