查看效果：
http://hovertree.com/texiao/css3/43/
代码如下：
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>css3 loading等待加载代码 - 何问起</title> <style> @keyframes move { from { transform: translate(0,50%); } to { transform: translate(0,850%); } } * { margin: 0; padding: 0; } body { min-width: 325px; height: 100vh; display: flex; flex-wrap: wrap; justify-content: space-around; align-items: center; align-content: flex-start; background: #2a2a2a; } figure { margin: 30px; width: 250px; height: 250px; border-radius: 50%; position: relative; background: #1c1c1c; } section { width: 10%; height: 100%; position: absolute; left: 45%; } section:nth-child(2) { transform: rotate(22.5deg); } section:nth-child(3) { transform: rotate(45deg); } section:nth-child(4) { transform: rotate(67.5deg); } section:nth-child(5) { transform: rotate(90deg); } section:nth-child(6) { transform: rotate(112.5deg); } section:nth-child(7) { transform: rotate(135deg); } section:nth-child(8) { transform: rotate(157.5deg); } figure div { height: 10%; border-radius: 50%; background: dodgerblue; animation: move 1s ease-in-out infinite alternate; } figure:nth-child(1) > section:nth-child(1) > div { animation-delay: -0.1875s; } figure:nth-child(1) > section:nth-child(2) > div { animation-delay: -0.175s; } figure:nth-child(1) > section:nth-child(3) > div { animation-delay: -0.1625s; } figure:nth-child(1) > section:nth-child(4) > div { animation-delay: -0.15s; } figure:nth-child(1) > section:nth-child(5) > div { animation-delay: -0.9375s; } figure:nth-child(1) > section:nth-child(6) > div { animation-delay: -0.925s; } figure:nth-child(1) > section:nth-child(7) > div { animation-delay: -0.9125s; } figure:nth-child(1) > section:nth-child(8) > div { animation-delay: -0.9s; } figure:nth-child(2) > section:nth-child(1) > div { animation-delay: -0.875s; } figure:nth-child(2) > section:nth-child(2) > div { animation-delay: -0.75s; } figure:nth-child(2) > section:nth-child(3) > div { animation-delay: -0.625s; } figure:nth-child(2) > section:nth-child(4) > div { animation-delay: -0.5s; } figure:nth-child(2) > section:nth-child(5) > div { animation-delay: -0.375s; } figure:nth-child(2) > section:nth-child(6) > div { animation-delay: -0.25s; } figure:nth-child(2) > section:nth-child(7) > div { animation-delay: -0.125s; } figure:nth-child(3) > section:nth-child(1) > div { animation-delay: -0.5s; } figure:nth-child(3) > section:nth-child(3) > div { animation-delay: -0.5s; } figure:nth-child(3) > section:nth-child(5) > div { animation-delay: -0.5s; } figure:nth-child(3) > section:nth-child(7) > div { animation-delay: -0.5s; } figure:nth-child(4) > section:nth-child(1) > div { animation-delay: -0.35s; } figure:nth-child(4) > section:nth-child(2) > div { animation-delay: -0.3s; } figure:nth-child(4) > section:nth-child(3) > div { animation-delay: -0.25s; } figure:nth-child(4) > section:nth-child(4) > div { animation-delay: -0.2s; } figure:nth-child(4) > section:nth-child(5) > div { animation-delay: -0.15s; } figure:nth-child(4) > section:nth-child(6) > div { animation-delay: -0.1s; } figure:nth-child(4) > section:nth-child(7) > div { animation-delay: -0.05s; } </style> <script src="js/prefixfree.min.js"></script> </head> <body> <figure> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> </figure> <figure> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> </figure> <figure> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> </figure> <figure> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> <section><div></div></section> </figure> <div style="text-align:center;margin:50px 0; font:normal 14px/24px 'MicroSoft YaHei';"> <p>适用浏览器：360、FireFox、Chrome、Opera、傲游、搜狗、世界之窗. 不支持Safari、IE8及以下浏览器。</p> <p>来源：<a href="http://hovertree.com/" target="_blank">何问起</a></p> </div> </body> </html>