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task_8.html
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task_8.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>响应式布局</title>
<style type="text/css">
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-size: 0;
}
div {
border: 1px solid #999;
background-color: #eee;
height: 50px;
display: inline-block;
}
/*屏幕宽度大于768px*/
@media screen and (min-width: 769px)
{
.a-1 {
margin: 20px 0 0 20px;
width: calc(33.3% - 20px);
}
.a-2 {
margin: 20px 20px 0 20px;
width: calc(33.3% - 40px);
}
.a-3 {
margin: 20px 20px 0 0;
width: calc(33.3% - 20px);
}
.b-4 {
margin: 20px 0 0 20px;
width: calc(25% - 20px);
}
.b-5 {
margin: 20px 20px 0 20px;
width: calc(50% - 40px);
}
.b-6 {
margin: 20px 20px 0 0;
width: calc(25% - 20px);
}
.c-7 {
margin: 20px 0 0 20px;
width: calc(8.3% - 20px);
}
.c-8 {
margin: 20px 0 0 20px;
width: calc(8.3% - 20px);
}
.c-9 {
margin: 20px 0 0 20px;
width: calc(16.6% - 20px);
}
.c-10 {
margin: 20px 0 0 20px;
width: calc(16.6% - 20px);
}
.c-11 {
margin: 20px 20px 0 20px;
width: calc(49.8% - 40px);
}
}
/*屏幕宽度小于768px*/
@media screen and (max-width: 768px)
{
.a-1 {
margin: 20px 0 0 20px;
width: calc(50% - 20px);
}
.a-2 {
margin: 20px 20px 0 20px;
width: calc(50% - 40px);
}
.a-3 {
margin: 20px 20px 0 20px;
width: calc(100% - 40px);
}
.b-4 {
margin: 20px 0 0 20px;
width: calc(25% - 20px);
}
.b-5 {
margin: 20px 20px 0 20px;
width: calc(50% - 40px);
}
.b-6 {
margin: 20px 20px 0 0;
width: calc(25% - 20px);
}
.c-7 {
margin: 20px 0 0 20px;
width: calc(16.6% - 20px);
}
.c-8 {
margin: 20px 0 0 20px;
width: calc(16.6% - 20px);
}
.c-9 {
margin: 20px 20px 0 20px;
width: calc(66.6% - 40px);
}
.c-10 {
margin: 20px 0 0 20px;
width: calc(25% - 20px);
}
.c-11 {
margin: 20px 20px 0 20px;
width: calc(25% - 20px);
}
}
</style>
</head>
<body>
<div class="a-1"></div>
<div class="a-2"></div>
<div class="a-3"></div>
<div class="b-4"></div>
<div class="b-5"></div>
<div class="b-6"></div>
<div class="c-7"></div>
<div class="c-8"></div>
<div class="c-9"></div>
<div class="c-10"></div>
<div class="c-11"></div>
</body>
</html>