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flex布局.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>flex布局</title>
<style>
section {
margin: 10px 0;
}
section h3 {
padding: 10px 0;
}
body {
padding: 10px 20px;
font: 14px/1.5 "微软雅黑";
}
* {
margin: 0;
padding: 0;
}
.w300 {
width: 300px;
}
.w500 {
width: 500px;
}
.flex-box {
display: flex;
border: 2px solid #000;
}
.flex-box div, .flex-box span {
width: 200px;
color: #fff;
font-size: 20px;
background-color: red;
}
.flex-box.row {
flex-direction: row;
}
.flex-box.row-reverse {
flex-direction: row-reverse;
}
.flex-box.column {
flex-direction: column;
}
.flex-box.column-reverse {
flex-direction: column-reverse;
}
.flex-box.nowrap {
flex-wrap: nowrap;
}
.flex-box.wrap {
flex-wrap: wrap;
}
.flex-box.wrap-reverse {
flex-wrap: wrap-reverse;
}
</style>
</head>
<body>
<section>
<h3> flex </h3>
<div class="flex-box">
<div>1</div>
<span>2</span>
<div>3</div>
<span>4</span>
</div>
</section>
<section>
<h3> flex.row(default) </h3>
<div class="flex-box row">
<div>1</div>
<span>2</span>
<div>3</div>
<span>4</span>
</div>
</section>
<section>
<h3> flex.row-reverse </h3>
<div class="flex-box row-reverse">
<div>1</div>
<span>2</span>
<div>3</div>
<span>4</span>
</div>
</section>
<section>
<h3> flex.column </h3>
<div class="flex-box column">
<div>1</div>
<span>2</span>
<div>3</div>
<span>4</span>
</div>
</section>
<section>
<h3> flex.column-reverse </h3>
<div class="flex-box column-reverse">
<div>1</div>
<span>2</span>
<div>3</div>
<span>4</span>
</div>
</section>
<section>
<h3> flex.nowrap（默认）：不换行。</h3>
<div class="flex-box nowrap">
<div>1</div>
<span>2</span>
<div>3</div>
<span>4</span>
</div>
</section>
<section>
<h3> flex.wrap 换行，第一行在上方。</h3>
<div class="flex-box wrap w500">
<div>1</div>
<span>2</span>
<div>3</div>
<span>4</span>
</div>
</section>
<section>
<h3> flex.wrap 换行，第一行在下方。</h3>
<div class="flex-box wrap-reverse w500">
<div>1</div>
<span>2</span>
<div>3</div>
<span>4</span>
</div>
</section>
</body>
</html>