屏幕缩小 文字不能缩小
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<title>屏幕适配</title>
<style type="text/css">
.body{
margin: 0;
}
.box a{
display: block;
width: 25%;
/*
第一种方法
width: calc(25% - 4px);*/
/* 这里要空格 不空格会出错*/
height: 100px;
background-color: pink;
text-align: center;
line-height: 100px;
float: left;
text-decoration: none;
font-size: 14px;
border: 1px solid black;
box-sizing:border-box;
}
</style>
</head>
<body>
<div class="box">
<a href="#">菜单文字</a>
<a href="#">菜单文字</a>
<a href="#">菜单文字</a>
<a href="#">菜单文字</a>
</div>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<title>屏幕适配</title>
<style type="text/css">
.body{
margin: 0;
}
.box div{
width: 23%;
height: 200px;
background-color: pink;
border: 1px solid #000;
margin: 1%;
float: left;
box-sizing:border-box;
}
/* 屏幕宽度小于800px时启动 */
@media (max-width:800px){
.box div{
width: 46%;
margin: 2%;
}
}
/* 屏幕宽度小于400px时启动 */
@media (max-width:400px){
.box div{
width: 94%;
margin: 3%;
}
}
</style>
</head>
<body>
<div class="box">
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
</div>
</body>
</html>