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好久没更新了

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2021-03-23 10:58:10 +08:00
parent eca64f86c0
commit 9bf8e8d020
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csspress/demo/flexjiaochazhou.html Normal file
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
*{
margin:0;
padding:0;
}
.box{
width: 1000px;
height: 500px;
background: pink;
display:flex;
/* 通过display:flex来把目标元素设置成flex布局 */
flex-direction: row;
/* flex-direction 属性决定主轴的方向，值为row的时候水平排列 起点在左 */
align-items: center;
}
.box1{
width: 1000px;
height: 500px;
background: gold;
display:flex;
flex-direction: row;
align-items: flex-start;
}
.left,.left1{
width: 200px;
height: 200px;
background: red;
}
.right,.right1{
width: 200px;
height: 200px;
background: blue;
}
.box3{
align-items: flex-end;
}
.box4{
align-items: baseline ;
}
.box5{
align-items: stretch;
}
.lefta{
height:auto
}
.boxfin{
flex-direction: column;
align-items: center;
}
</style>
</head>
<body>
<div style="margin-bottom: 50px;">
注：以下所有实例 基于flex-direction:row的情况，即水平排列 起点在左边
且 主轴为默认
</div>
<div class="box">
<div class="left"></div>
<div class="right"></div>
</div>
<div style=" margin-bottom: 30px;">
上面是 align-items:center 居中的状况
</div>
<div class="box1">
<div class="left"></div>
<div class="right"></div>
</div>
<div style=" margin-bottom: 30px;">
上面是 align-items: flex-start; 起点在上面
</div>
<div class="box box4">
<div class="left"></div>
<div class="right"></div>
</div>
<div style=" margin-bottom: 30px;">
上面是 align-items:base-line 项目的第一行文字的基线对齐的情况
</div>
<div class="box1 box5">
<div class="left lefta"></div>
<div class="right lefta"></div>
</div>
<div style=" margin-bottom: 30px;">
上面是 align-items:stretch（默认值） 如果项目未设置高度或设为auto，将占满整个容器的高度。
</div>
<div class="box1 boxfin">
<div class="left"></div>
<div class="right"></div>
</div>
<div class="zong">
总结1：flex-direction属性定义的是主轴方向，默认为水平，所以 交叉轴方向默认为垂直;
<p>当 flex-direction的值为column的时候，align-items决定的就是垂直方向的排列方式</p>
<b>align-items决定的是交叉轴的排列方式 而不一定是单指 垂直的排列方式</b>
</div>
</body>
</html>