源代码 ：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>开源教程(ossoft.cn)</title> <style> #boxshadow { position: relative; -moz-box-shadow: 1px 2px 4px rgba(0, 0, 0,0.5); -webkit-box-shadow: 1px 2px 4px rgba(0, 0, 0, .5); box-shadow: 1px 2px 4px rgba(0, 0, 0, .5); padding: 10px; background: white; } /* Make the image fit the box */ #boxshadow img { width: 100%; border: 1px solid #8a4419; border-style: inset; } #boxshadow::after { content: ''; position: absolute; z-index: -1; /* hide shadow behind image */ -webkit-box-shadow: 0 15px 20px rgba(0, 0, 0, 0.3); -moz-box-shadow: 0 15px 20px rgba(0, 0, 0, 0.3); box-shadow: 0 15px 20px rgba(0, 0, 0, 0.3); width: 70%; left: 15%; /* one half of the remaining 30% */ height: 100px; bottom: 0; } </style> </head> <body> <div id="boxshadow"> <img src="rock600x400.jpg" alt="Norway" width="600" height="400"> </div> </body> </html>
运行结果