<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> .snow-container { position: fixed; height: 100%; width: 100%; max-width: 100%; top: 0; overflow: hidden; z-index: -2; pointer-events: none; } .snow { display: block; position: absolute; z-index: 2; top: 0; right: 0; bottom: 0; left: 0; pointer-events: none; -webkit-transform: translate3d(0, -100%, 0); transform: translate3d(0, -100%, 0); -webkit-animation: snow linear infinite; animation: snow linear infinite; } .snow.foreground { background-image: url(" https://dl6rt3mwcjzxg.cloudfront.net/assets/snow/snow-large-075d267ecbc42e3564c8ed43516dd557.png"); -webkit-animation-duration: 15s; animation-duration: 15s; } .snow.foreground.layered { -webkit-animation-delay: 7.5s; animation-delay: 7.5s; } .snow.middleground { background-image: url( https://dl6rt3mwcjzxg.cloudfront.net/assets/snow/snow-medium-0b8a5e0732315b68e1f54185be7a1ad9.png); -webkit-animation-duration: 20s; animation-duration: 20s; } .snow.middleground.layered { -webkit-animation-delay: 10s; animation-delay: 10s; } .snow.background { background-image: url( https://dl6rt3mwcjzxg.cloudfront.net/assets/snow/snow-small-1ecd03b1fce08c24e064ff8c0a72c519.png); -webkit-animation-duration: 30s; animation-duration: 30s; } .snow.background.layered { -webkit-animation-delay: 15s; animation-delay: 15s; } @-webkit-keyframes snow { 0% { -webkit-transform: translate3d(0, -100%, 0); transform: translate3d(0, -100%, 0); } 100% { -webkit-transform: translate3d(15%, 100%, 0); transform: translate3d(15%, 100%, 0); } } @keyframes snow { 0% { -webkit-transform: translate3d(0, -100%, 0); transform: translate3d(0, -100%, 0); } 100% { -webkit-transform: translate3d(15%, 100%, 0); transform: translate3d(15%, 100%, 0); } } body { background: #000 url( https://files.cnblogs.com/files/qlqwjy/22.bmp) repeat scroll center top; color: #000; font-family: Verdana,Arial,Helvetica,sans-serif; font-size: 17px; min-height: 101%; } </style> </head> <body> <div class="snow-container"> <div class="snow foreground"></div> <div class="snow foreground layered"></div> <div class="snow middleground"></div> <div class="snow middleground layered"></div> <div class="snow background"></div> <div class="snow background layered"></div> </div> </body> </html>