<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>6.媒体查询</title>
<style>
*{
margin: 0;
padding: 0;
}
.box{
list-style: none;
}
.box li{
width: 25%;
height: 100px;
line-height: 100px;
text-align: center;
float: left;
border: 1px solid
box-sizing: border-box;
}
@media screen and (max-width: 767px) {
.box li{
width: 100%;
}
}
@media screen and (min-width: 768px) and (max-width: 1024px){
.box li{
width: 50%;
}
}
</style>
</head>
<body>
<ul class="box">
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
</ul>
</body>
</html>
