[css3] 看博客学习别人的旋转的星球
定义一个div 太阳轨道sunline,边框显示出来,定义position为relative #sunline{ width: 500px; height: 500px; border:2px solid #000; border-radius: 50%; margin:50px auto; position: relative; animation:sunRotate 5s; }
定义一个div 太阳sun,把红太阳放在中间,居中显示,定义position为absolute, 距左50%,剧上50%,左边距负的宽度的一半,上边距负的高度的一半 #sun{ background: red; width: 150px; height: 150px; position: absolute; left: 50%; top:50%; margin-left:-75px; margin-top: -75px; border-radius: 50%; }
定义一个地球的轨道 earthline,边框显示出来,定义position为absolute,距左50%,剧上负的高度一半,左边距负的宽度的一半
#earthline{ width: 200px; height: 200px; border:1px solid #000; border-radius: 50%; position: absolute; left: 50%; top: -100px; margin-left: -100px; }
定义一个div 地球 earth,把地球放在水平居中,太阳轨道垂直地球居中,定义position为absolute,距左50%,剧上50%,左边距负的宽度的一半,上边距负的高度的一半 #earth{ background: green; width: 100px; height: 100px; border-radius: 50%; position: absolute; left: 50%; margin-left: -50px; top: 50%; margin-top: -50px; }
定义一个月球moon,定义position为absolute,距左50%,剧上负的高度一半,左边距负的宽度的一半 #moon{ width: 40px; height: 40px; background: blue; border-radius: 50%; position: absolute; left: 50%; margin-left: -20px; top: -20px; }
定义动画@keyframes,100%的进度的时候,旋转一圈 @keyframes sunRotate{ 100%{ transform:rotate(360deg); } }
为太阳轨道sunline绑定动画,使用属性animation,参数:规则名称,执行时间,速度曲线,延迟时间,播放次数,是否反向 animation:sunRotate 10s linear 0s infinite;
速度曲线: linear(线性匀速) ease(缓动) 播放次数:infinite(无限次数) 为地球轨道earthline绑定动画 animation:sunRotate 5s linear 0s infinite; 运行时间不一样,这个快 DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>title><style>#sunline{ width: 500px; height: 500px; border:2px solid #000; border-radius: 50%; margin:100px auto; position: relative; animation:sunRotate 10s linear 0s infinite;}#sun{ background: red; width: 150px; height: 150px; position: absolute; left: 50%; top:50%; margin-left:-75px; margin-top: -75px; border-radius: 50%;}#earthline{ width: 200px; height: 200px; border:1px solid #000; border-radius: 50%; position: absolute; left: 50%; top: -100px; margin-left: -100px; animation:sunRotate 5s linear 0s infinite;}#earth{ background: green; width: 100px; height: 100px; border-radius: 50%; position: absolute; left: 50%; margin-left: -50px; top: 50%; margin-top: -50px;}#moon{ width: 40px; height: 40px; background: blue; border-radius: 50%; position: absolute; left: 50%; margin-left: -20px; top: -20px;}@keyframes sunRotate{ 100%{ transform:rotate(360deg); }}style>head><body><div id="sunline"> <div id="sun">div> <div id="earthline"> <div id="earth">div> <div id="moon">div> div>div>body>html>
|
- 上一篇:CSS3 波浪简单模拟
- 下一篇:Bootstrap学习笔记(3)