更新第39个小实例
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35. HTML5+CSS3小实例之超酷的文字滚动特效
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36. HTML5+CSS3小实例之伸缩式动态搜索框
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37. HTML5+CSS3小实例之JS+CSS实现日月交替效果
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38. HTML5+CSS3小实例之3D分层按钮的悬停效果
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38. HTML5+CSS3小实例之3D分层按钮的悬停效果
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39. HTML5+CSS3小实例之手机充电特效（二）
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*{
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/* 初始化 取消内外边距 */
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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%窗口高度 */
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height: 100vh;
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background-color: #000;
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}
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.box{
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width: 800px;
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height: 100%;
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margin: 0 auto;
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/* 相对定位 */
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position: relative;
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}
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/* 充电百分比 */
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.number{
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color: #fff;
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position: absolute;
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z-index: 1;
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width: 200px;
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height: 200px;
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line-height: 200px;
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text-align: center;
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font-size: 30px;
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left: 50%;
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top: 25%;
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margin-left: -100px;
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}
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.contrast{
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width: 100%;
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height: 100%;
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background-color: #000;
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position: relative;
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/* 设置对比度 */
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filter: contrast(15);
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/* 指定动画：动画名 时长 线性的 无限次播放 */
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animation: hueRotate 5s linear infinite;
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}
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/* 变色动画 */
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@keyframes hueRotate {
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0%{
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/* contrast是设置对比度，hue-rotate是颜色滤镜 通过设置度数来改变颜色 */
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filter: contrast(15) hue-rotate(0);
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}
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100%{
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filter: contrast(15) hue-rotate(360deg);
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}
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}
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.circle{
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width: 300px;
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height: 300px;
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position: absolute;
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top: 20%;
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left: 50%;
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margin-left: -150px;
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/* 设置模糊度，配合上面的contrast可以产生粘性效果 */
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filter: blur(8px);
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/* 执行动画 */
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animation: circleRotate 5s linear infinite;
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}
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/* 外圈 */
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.circle::before{
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content: "";
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width: 200px;
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height: 200px;
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background-color: cyan;
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position: absolute;
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top: 50%;
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left: 50%;
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transform: translate(-50%,-50%);
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border-radius: 42% 38% 63% 49% / 45%;
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}
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/* 中心圆（黑色） */
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.circle::after{
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content: "";
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width: 178px;
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height: 178px;
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background-color: #000;
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position: absolute;
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top: 50%;
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left: 50%;
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transform: translate(-50%,-50%);
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border-radius: 50%;
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}
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/* 圆旋转动画 */
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@keyframes circleRotate {
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0%{
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transform: rotate(0);
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}
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100%{
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transform: rotate(360deg);
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}
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}
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/* 冒泡的底座 */
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.bubble-home{
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width: 100px;
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height: 40px;
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background-color: cyan;
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position: absolute;
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left: 50%;
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bottom: 0;
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margin-left: -50px;
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border-radius: 100px 100px 0 0;
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filter: blur(8px);
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}
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.bubble{
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width: 20px;
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height: 20px;
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background-color: cyan;
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border-radius: 100%;
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position: absolute;
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left: 50%;
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bottom: 0;
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transform: translateX(-50%);
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z-index: 2;
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filter: blur(5px);
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/* 执行动画：动画名 时长 加速后减速 无限次播放 */
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animation: bubbleUp 5s ease-in-out infinite;
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}
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/* 接下来分别为每一个泡泡设置大小、位置、动画时长、动画延迟时间 */
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.bubble:nth-child(1){
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width: 20px;
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height: 20px;
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left: 50%;
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animation-duration: 5s;
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animation-delay: 1s;
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}
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.bubble:nth-child(2){
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width: 22px;
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height: 22px;
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left: 49%;
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animation-duration: 4s;
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animation-delay: 2s;
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}
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.bubble:nth-child(3){
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width: 24px;
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height: 24px;
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left: 47%;
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animation-duration: 3s;
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animation-delay: 3s;
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}
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.bubble:nth-child(4){
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width: 18px;
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height: 18px;
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left: 53%;
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animation-duration: 3s;
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animation-delay: 4s;
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}
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.bubble:nth-child(5){
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width: 26px;
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height: 26px;
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left: 51%;
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animation-duration: 4s;
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animation-delay: 5s;
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}
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/* 冒泡动画 */
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@keyframes bubbleUp {
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0%{
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bottom: 0;
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}
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100%{
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bottom: calc(80% - 260px);
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}
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}
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@ -0,0 +1,27 @@
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<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=utf-8">
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<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no">
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<title>手机充电特效</title>
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<link rel="stylesheet" href="../css/39.css">
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</head>
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<body>
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<div class="box">
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<div class="number">98.6%</div>
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<div class="contrast">
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<div class="bubble"></div>
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<div class="bubble"></div>
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<div class="bubble"></div>
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<div class="bubble"></div>
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<div class="bubble"></div>
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<div class="bubble-home"></div>
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<div class="circle"></div>
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</div>
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</div>
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</body>
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</html>
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