新增第213个小实例:旋转彩色loading加载动画
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210. HTML5+CSS3小实例:文字溶合切换效果
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211. HTML5+CSS3+JS小实例:实时给中文添加拼音
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212. HTML5+CSS3小实例:纯CSS实现弧边选项卡
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213. HTML5+CSS3小实例:旋转彩色loading加载动画
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#### 赞赏作者
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![image](https://gitee.com/wyanhui02/html_css_demo/raw/master/images/%E8%B5%9E%E8%B5%8F%E4%BD%9C%E8%80%85/%E8%B5%9E%E8%B5%8F%E7%A0%81.jpg)
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*{
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margin: 0;
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padding: 0;
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}
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body{
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/* 100%窗口宽高 */
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min-height: 100vh;
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/* 弹性布局 居中演示 */
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display: flex;
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justify-content: center;
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align-items: center;
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background-color: #000;
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}
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.loader{
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/* css变量 环的宽度 */
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--s:15px;
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width: calc(16 * var(--s));
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height: calc(16 * var(--s));
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border-radius: 50%;
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/* 网格布局 */
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display: grid;
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/* 渐变蒙版 */
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-webkit-mask: radial-gradient(50% 50%,
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#0000 calc(99% - 2 * var(--s)),
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#000 calc(100% - 2 * var(--s)));
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/* 执行动画:动画名 时长 线性 循环播放 */
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animation: spin 3s linear infinite;
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}
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.loader::before{
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content: "";
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/* 圆锥渐变 */
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background: conic-gradient(
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from 25deg,
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#70a1d7 25%,
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#a1de93 0 50%,
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#f7f48b 0 75%,
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#f47c7c 0
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);
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/* 渐变蒙版 */
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-webkit-mask: repeating-conic-gradient(#0000 0 25deg,#000 23% 25%),
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radial-gradient(var(--s) at var(--s) 50%,#000 97%,#0000) left/calc(100% - 2 * var(--s)) 100% repeat-x,
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radial-gradient(var(--s) at 50% var(--s),#000 97%,#0000) top/100% calc(100% - 2 * var(--s)) repeat-y;
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}
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/* 定义动画 */
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@keyframes spin {
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to{
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/* 旋转一周 */
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transform: rotate(1turn);
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}
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}
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<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>旋转彩色loading加载动画</title>
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<link rel="stylesheet" href="213.css">
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</head>
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<body>
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<div class="loader"></div>
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</body>
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</html>
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