<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>css 转圈</title> <style> .turn{ width:100px; height: 100px; background: aqua; animation:turn 1s linear infinite; margin: 100px auto; } /* turn : 定义的动画名称 1s : 动画时间 linear : 动画以何种运行轨迹完成一个周期 infinite :规定动画应该无限次播放 */ @keyframes turn{ 0%{-webkit-transform:rotate(0deg);} 25%{-webkit-transform:rotate(90deg);} 50%{-webkit-transform:rotate(180deg);} 75%{-webkit-transform:rotate(270deg);} 100%{-webkit-transform:rotate(360deg);} } </style> </head> <body> <div class="turn"></div> </body> </html>