分享一次纯 css 瀑布流 和 js 瀑布流 纯 css 写瀑布流 1.multi-columns 方式：
通过 Multi-columns 相关的属性 column-count、column-gap 配合 break-inside 来实现瀑布流布局。
设置这样的 html 结构：
1 <div class="masonry"> 2 <div class="item"> 3 <div class="item_content content-lar"> 1 4 </div> 5 </div> 6 <div class="item"> 7 <div class="item_content content-sma"> 2 8 </div> 9 </div> 10 <div class="item"> 11 <div class="item_content content-mid"> 3 12 </div> 13 </div> 14 <div class="item"> 15 <div class="item_content content-sma"> 4 16 </div> 17 </div> 18 <div class="item"> 19 <div class="item_content content-mid"> 5 20 </div> 21 </div> 22 <div class="item"> 23 <div class="item_content content-lar"> 6 24 </div> 25 </div> 26 <div class="item"> 27 <div class="item_content content-sma"> 7 28 </div> 29 </div> 30 <div class="item"> 31 <div class="item_content content-lar"> 8 32 </div> 33 </div> 34 <div class="item"> 35 <div class="item_content content-lar"> 9 36 </div> 37 </div> 38 <div class="item"> 39 <div class="item_content content-sma"> 10 40 </div> 41 </div> 42 <div class="item"> 43 <div class="item_content content-mid"> 11 44 </div> 45 </div> 46 <div class="item"> 47 <div class="item_content content-mid"> 12 48 </div> 49 </div> 50 <!-- more items --> 51 </div>