使用css的animation和transform和transition可以实现简单的图片放大缩小，旋转，位移的效果，由此可以延伸的动画效果还是挺多的，比如图片慢慢放大，图片慢慢旋转并放大，图片慢慢变化位置等等，
抽奖动画效果图
实现的原理也很简单，就是通过使用动画animation和关键动画帧来实现的，可以使用缩放来进行平滑的过渡效果，下面是源码：
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0" /><title>Document</title></head><body><div class="center"><div>抽奖效果</div><imgsrc="https://img-blog.csdnimg.cn/67fc9799ae8e48749e82cf70b179895b.png"class="card"/></div><style>.center {width: 500px;margin: 0 auto;text-align: center;}.card {width: 260px;height: 400px;animation: showImg 3s linear 1;}@keyframes showImg {0% {transform: scale(0.1) rotate(0);}50% {transform: scale(0.5) rotate(360deg);}100% {transform: scale(1) rotate(720deg);}}</style></body>
</html>
图片旋转360度并放大
图片由小变大，并以y轴为中心旋转360度后展示：
源代码：
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0" /><title>Document</title></head><body><div class="wrap"><div>抽奖效果</div><div class="box"><imgsrc="https://img-blog.csdnimg.cn/67fc9799ae8e48749e82cf70b179895b.png"class="img"/></div></div><style>* {padding: 0;margin: 0;/* height: 100%; */width: 100%;}.wrap {margin: 0 auto;padding-top: 100px;text-align: center;}.box {width: 300px;height: 400px;margin: 0 auto;}.img {width: 220px;height: 300px;transform: rotatey(0deg) scale(0.1);/* transform-origin: center; */transition: all 3s;}.wrap:hover .img {/* transform: scale(1); */transform: rotatey(360deg) scale(1);-webkit-transform: rotatey(360deg) scale(1);-o-transform: rotatey(360deg) scale(1);-moz-transform: rotatey(360deg) scale(1);-ms-transform: rotatey(360deg) scale(1);}</style></body>
</html>
图片慢慢旋转动画
图片慢慢旋转是通过rotate来实现的，并且鼠标放上去之后，会有暂停的效果：下面的动图有卡顿的效果，实际情况非常丝滑
旋转图片的源代码：
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0" /><title>Document</title></head><body><div class="wrap"><div class="source"></div><div class="avatar"></div></div></body><style>body {background-color: black;padding-top: 100px;}.wrap {margin: 0 auto;display: flex;flex-direction: row;justify-content: center;align-items: center;}.source {width: 100px;height: 100px;margin-right: 20px;background-image: url('./assets/ball.png');background-position: center;background-size: 100% 100%;animation: circle 1s linear infinite;}.avatar {width: 100px;height: 100px;border-radius: 50%;background-image: url('https://profile-avatar.csdnimg.cn/f6acd04828d84240afc2739fe039fd49_weixin_44786530.jpg!1');background-position: center;background-size: 100% 100%;animation: circle 2s linear infinite;}.source:hover {animation-play-state: paused;}.avatar:hover {animation-play-state: paused;}@keyframes circle {0% {transform: rotate(0deg);}10% {transform: rotate(36deg);}20% {transform: rotate(72deg);}30% {transform: rotate(108deg);}40% {transform: rotate(144deg);}50% {transform: rotate(180deg);}60% {transform: rotate(216deg);}70% {transform: rotate(252deg);}80% {transform: rotate(288deg);}90% {transform: rotate(324deg);}100% {transform: rotate(360deg);}}</style>
</html>
春联效果
春节快要到了，所以春联也整起来吧，使用了变换中的旋转，还有变化中心位置的修改，效果图如下：
源代码：
<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0" /><title>Document</title></head><body><div class="wrap"><div class="card"><div class="text">春</div></div><div class="two"><div class="text">到</div></div><div class="three"><div class="text">万</div></div><div class="for"><div class="text">家</div></div></div><style>* {padding: 0;margin: 0;box-sizing: border-box;}html,body {width: 100%;height: 100%;background-color: skyblue;}.wrap {width: 100px;/* margin-top: 200px; */margin: 100px auto;}.card {width: 100px;height: 100px;background-color: red;transform: rotate(45deg);transform-origin: left top;animation: shark 3s infinite ease-in-out -6s;}.two {width: 100px;height: 100px;margin-top: 45px;background-color: red;transform: rotate(45deg);transform-origin: left top;animation: shark 2s infinite ease-in-out -5s;}.three {width: 100px;height: 100px;margin-top: 45px;background-color: red;transform: rotate(45deg);transform-origin: left top;animation: shark 3s infinite ease-in-out -4s;}.for {width: 100px;height: 100px;margin-top: 45px;background-color: red;transform: rotate(45deg);transform-origin: left top;animation: shark 2s infinite ease-in-out -3s;}.text {font-size: 50px;color: white;transform: rotate(-45deg) translate(10px, 10px);}@keyframes shark {0% {transform: rotate(30deg);}50% {transform: rotate(60deg);}100% {transform: rotate(30deg);}}</style></body>
</html>
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