<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style> body{ background: #000; overflow: hidden; } .sun{ width: 100px; height: 100px; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); background: yellow; box-shadow: 0 0 30px 3px gold; border-radius: 50%; } .earth{ width: 350px; height: 350px; position: absolute; left: 50%; top: 50%; /*保证居中*/ transform: translate(-50%,-50%); border: 1px solid #ccc; border-radius: 50%; animation: rot 8s linear infinite; } .earth::before{ content: ""; width: 40px; height: 40px; position: absolute; left: 0; top: 50%; transform: translate(-50%,-50%); background: dodgerblue; border-radius: 50%; } .moon{ width: 80px; height: 80px; position: absolute; left: 0; top: 50%; transform: translate(-50%,-50%); border-radius: 50%; animation: rot 2s linear infinite; } .moon::before{ content: ""; width: 10px; height: 10px; position: absolute; left: 0; top: 50%; transform: translate(-50%,-50%); background: #fff; border-radius: 50%; } .venus{ width: 500px; height: 500px; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); border: 1px solid #ccc; border-radius: 50%; animation: rot 6s linear infinite; } .venus::before{ content: ""; width: 30px; height: 30px; position: absolute; left: 0; top: 50%; transform: translate(-50%,-50%); background: red; border-radius: 50%; } .mars{ width: 600px; height: 600px; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); border: 1px solid #ccc; border-radius: 50%; animation: rot 10s linear infinite; } .mars::before{ content: ""; width: 50px; height: 50px; position: absolute; left: 0; top: 50%; transform: translate(-50%,-50%); background: pink; border-radius: 50%; } @keyframes rot{ 0%{ transform:translate(-50%,-50%) rotate(0deg); } 100%{ transform:translate(-50%,-50%) rotate(360deg); } } </style> </head> <body> <div class="sun"> <div class="earth"> <div class="moon"></div> </div> </div> <div class="venus"></div> <div class="mars"></div> </body> </html>
