我们先来看下效果：
（推荐教程：CSS教程）
html代码：
<div class="box shadow"> 这是是pic-1 <div class="circle"></div> </div> <div class="box shadow"> 这是是pic-2 <div class="circle"></div> </div> <div class="box shadow"> 这是是pic-3 <div class="circle"></div> </div>
css代码：
<style type="text/css">html { box-sizing: border-box; font: 18px PT Mono; background: antiquewhite;}*,*::before,*::after { box-sizing: inherit;}body { display: flex; align-items: center; justify-content: center; flex-direction: column; width: 100%; height: 100vh;}.box { width: 25%; min-width: 250px; display: block; height: 50px; position: relative; border-radius: 5px; background: linear-gradient(to right, #abbd73 35%, #d6e2ad 100%); margin-bottom: 40px; padding: 15px 25px 0 40px; color: darkslategray; box-shadow: 1px 2px 1px -1px #777; transition: background 200ms ease-in-out;}.shadow { position: relative;}.shadow:before { z-index: -1; position: absolute; content: ""; bottom: 13px; right: 7px; width: 75%; top: 0; box-shadow: 0 15px 10px #777; -webkit-transform: rotate(4deg); transform: rotate(4deg); transition: all 150ms ease-in-out;}.box:hover { background: linear-gradient(to right, #abbd73 0%, #abbd73 100%);}.shadow:hover::before { -webkit-transform: rotate(0deg); transform: rotate(0deg); bottom: 20px; z-index: -10;}.circle { position: absolute; top: 14px; left: 15px; border-radius: 50%; box-shadow: inset 1px 1px 1px 0px rgba(0, 0, 0, 0.5), inset 0 0 0 25px antiquewhite; width: 20px; height: 20px; display: inline-block;}</style>
