<article>
<!DOCTYPE html>
<head>
<link rel="stylesheet" href="simple.css" type="text/css" />
</head>
<body>
<div class="cont">
<h2>Welcome to lidihuo</h2>
<p>A solution of all technology.</p>
</div>
</body>
</html>
.cont(@count) when (@count > 0) {
.cont((@count-1));
width: (25px * @count);
}
div {
.cont(7);
}
div {
width: 25px;
width: 50px;
width: 75px;
width: 100px;
width: 125px;
width: 150px;
width: 175px;
}