详解纯css实现瀑布流（multi-column多列及flex布局）
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瀑布流的布局自我感觉还是很吸引人的，最近又看到实现瀑布流这个做法，在这里记录下，特别的，感觉flex布局实现瀑布流还是有点懵的样子，不过现在就可以明白它的原理了
1.multi-column多列布局实现瀑布流
先简单的讲下multi-column相关的部分属性
column-count设置列数column-gap设置列与列之间的间距column-width设置每列的宽度
还要结合在子容器中设置break-side防止多列布局，分页媒体和多区域上下文中的意外中断
break-side属性值
- auto 指定既不强制也不禁止元素内的页/列中断。
- avoid 指定避免元素内的分页符。
- avoid-page 指定避免元素内的分页符。
- avoid-column 指定避免元素内的列中断。
- avoid-region 指定避免元素内的区域中断。
截取了部分，可自己填充
/ html文件 /
<!-- 使用multi-columns实现瀑布流 -->
<div id="root">
<div class="item">
<img class="itemImg" src="../images/1.jpeg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/2.jpg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/3.jpg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/4.jpg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/5.jpeg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
</div>
/ css样式 /
body {
background: #e5e5e5;
}
/ 瀑布流最外层 /
#root {
marg: 0 auto;
width: 1200px;
column-count: 5;
column-width: 240px;
column-gap: 20px;
}
/ 每一列图片包含层 /
.item {
marg-bottom: 10px;
/ 防止多列布局，分页媒体和多区域上下文中的意外中断 /
break-side: avoid;
background: #fff;
}
.item:hover {
box-shadow: 2px 2px 2px rgba(0, 0, 0, .5);
}
/ 图片 /
.itemImg {
width: 100%;
vertical-align: middle;
}
/ 图片下的信息包含层 /
.userInfo {
paddg: 5px 10px;
}
.avatar {
vertical-align: middle;
width: 30px;
height: 30px;
border-radius: 50%;
}
.username {
marg-left: 5px;
text-shadow: 2px 2px 2px rgba(0, 0, 0, .3);
}
2.flex布局实现瀑布流将外层设置为row布局，然后再设置一个容器并设置为column布局，它是将列作为一个整体，然后在对列进行划分，在列里进行宽固定来实现的
/ html文件（只截取两列布局）/
<div id="root">
<div class="itemContaer">
<div class="item">
<img class="itemImg" src="../images/1.jpeg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/2.jpg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/3.jpg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/4.jpg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/5.jpeg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/6.jpeg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/7.jpeg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
</div>
<div class="itemContaer">
<div class="item">
<img class="itemImg" src="../images/5.jpeg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/7.jpeg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/6.jpeg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/5.jpeg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/6.jpeg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
<div class="item">
<img class="itemImg" src="../images/6.jpeg" alt=""/>
<div class="userInfo">
<img class="avatar" src="../images/gift.png" alt=""/>
<span class="username">牵起你的左手护着你</span>
</div>
</div>
</div>
</div>
/ css文件 /
body{
background: #e5e5e5;
}
#root{
display: flex;
flex-direction: row;
marg: 0 auto;
width: 1200px;
}
.itemContaer{
marg-right: 10px;
flex-direction: column;
width: 240px;
}
.item{
marg-bottom: 10px;
background: #fff;
}
.itemImg{
width: 100%;
}
.userInfo {
paddg: 5px 10px;
}
.avatar {
vertical-align: middle;
width: 30px;
height: 30px;
border-radius: 50%;
}
.username {
marg-left: 5px;
text-shadow: 2px 2px 2px rgba(0, 0, 0, .3);
}
实践后发现，纯css实现的瀑布流只能是一列一列的排布，所以还是得用js来实现瀑布流更符合我们常见的瀑布流
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