这篇文章主要介绍“CSS3怎么实现动画按钮效果”，在日常操作中，相信很多人在CSS3怎么实现动画按钮效果问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”CSS3怎么实现动画按钮效果”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！
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在线演示地址：http://jsfiddle.net/lhb25/9EcuV/8/embedded/result/
HTML 部分非常简单，五种效果对应的class为：praticle、cells、jelly、blobbs、chase，代码如下：
这些精美的效果用到了 CSS3 border-radius（圆角）、box-shadow（阴影）、transition（变形）、transform（转换）和 animation（动画）等特性，公共部分的完整代码如下：
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section > div { display: inline-block; position: relative; width: 200px; height: 200px; margin: 0px auto; border-radius: 50%; border: 10px solid hsla(0,0%,0%,.7); box-shadow: inset 0 15px 15px -5px hsla(0,0%,100%,.7), inset 0 -5px 10px 3px hsla(0,0%,0%,.6), 0 8px 10px 2px hsla(0,0%,0%,.3); background-position: center; -webkit-transform: scale3d(.66,.66,1); -moz-transform: scale(.66); -ms-transform: scale(.66); -o-transform: scale(.66); transform: scale(.66); -webkit-transition: -webkit-transform .5s cubic-bezier(.32,0,.15,1); -moz-transition: -moz-transform .5s cubic-bezier(.32,0,.15,1); -ms-transition: -ms-transform .5s cubic-bezier(.32,0,.15,1); -o-transition: -o-transform .5s cubic-bezier(.32,0,.15,1); transition: transform .5s cubic-bezier(.32,0,.15,1); } section > div:hover { cursor: none; -webkit-transform: scale3d(1,1,1); -moz-transform: scale(1); -ms-transform: scale(1); -o-transform: scale(1); transform: scale(1); -webkit-transition: -webkit-transform .2s cubic-bezier(.32,0,.15,1); -moz-transition: -moz-transform .2s cubic-bezier(.32,0,.15,1); -ms-transition: -ms-transform .2s cubic-bezier(.32,0,.15,1); -o-transition: -o-transform .2s cubic-bezier(.32,0,.15,1); transition: transform .2s cubic-bezier(.32,0,.15,1); }这段代码看起来很长很复杂，其实大部分是兼容性代码，精简以后的代码如下：
section > div { display: inline-block; position: relative; width: 200px; height: 200px; margin: 0px auto; /*对于正方形元素border-radius设置为50%刚好变成圆形*/ border-radius: 50%; /*宽度为10px的、不透明度为0.7的黑色边框效果*/ border: 10px solid hsla(0,0%,0%,.7); /*通过边框阴影实现立体按钮效果，inset是内阴影效果*/ box-shadow: inset 0 15px 15px -5px hsla(0,0%,100%,.7), inset 0 -5px 10px 3px hsla(0,0%,0%,.6), 0 8px 10px 2px hsla(0,0%,0%,.3); background-position: center; /*初始缩放0.66倍*/ transform: scale(.66); /*在失去焦点时根据自定义的贝塞尔时间曲线做动画变换效果*/ transition: transform .5s cubic-bezier(.32,0,.15,1); } section > div:hover { cursor: none; /*悬停时恢复原始大小*/ transform: scale(1); /*鼠标悬停时根据自定义的贝塞尔时间曲线做动画变换效果*/ transition: transform .2s cubic-bezier(.32,0,.15,1); }上面的代码中用到了贝塞尔曲线，在数学的数值分析领域中，贝塞尔曲线又称贝赛尔曲线（Bézier曲线）是电脑图形学中相当重要的参数曲线。更高维度的广泛化贝塞尔曲线就称作贝塞尔曲面，其中贝塞尔三角是一种特殊的实例。
贝塞尔曲线于1962年，由法国工程师皮埃尔·贝塞尔（Pierre Bézier）所广泛发表，他运用贝塞尔曲线来为汽车的主体进行设计。贝塞尔曲线最初由Paul de Casteljau于1959年运用de Casteljau算法开发，以稳定数值的方法求出贝塞尔曲线。
想更加深入的了解贝塞尔曲线可以到维基百科了解：贝塞尔曲线。下面是五种效果的完整代码：
效果一（Praticle）的完整代码：
.particle { background-size: 12px 12px; background-color: #000; /* the default highlight was too strong */ box-shadow: inset 0 15px 15px -5px hsla(0,0%,100%,.25), inset 0 -5px 10px 3px hsla(0,0%,0%,.6), 0 8px 10px 2px hsla(0,0%,0%,.3); background-image: -webkit-radial-gradient( #555 0px, hsla(0,0%,0%,0) 2px, hsla(0,0%,0%,0) 24px), -webkit-repeating-radial-gradient( white 0px, black 2px, black 48px); background-image: -moz-radial-gradient( #555 0px, hsla(0,0%,0%,0) 2px, hsla(0,0%,0%,0) 24px), -moz-repeating-radial-gradient( white 0px, black 2px, black 48px); background-image: -ms-radial-gradient( #555 0px, hsla(0,0%,0%,0) 2px, hsla(0,0%,0%,0) 24px), -ms-repeating-radial-gradient( white 0px, black 2px, black 48px); background-image: -o-radial-gradient( #555 0px, hsla(0,0%,0%,0) 2px, hsla(0,0%,0%,0) 24px), -o-repeating-radial-gradient( white 0px, black 2px, black 48px); background-image: radial-gradient( #555 0px, hsla(0,0%,0%,0) 2px, hsla(0,0%,0%,0) 24px), repeating-radial-gradient( white 0px, black 2px, black 48px); } .particle:hover { -webkit-animation: particle-size .24s linear infinite, particle-positon .48s linear infinite alternate; -moz-animation: particle-size .24s linear infinite, particle-positon .48s linear infinite alternate; -ms-animation: particle-size .24s linear infinite, particle-positon .48s linear infinite alternate; -o-animation: particle-size .24s linear infinite, particle-positon .48s linear infinite alternate; animation: particle-size .24s linear infinite, particle-positon .48s linear infinite alternate; } @-webkit-keyframes particle-size { from { background-size: 6px 6px, 12px 12px; } to { background-size: 12px 12px, 24px 24px; } } @-moz-keyframes particle-size { from { background-size: 6px 6px, 12px 12px; } to { background-size: 12px 12px, 24px 24px; } } @-ms-keyframes particle-size { from { background-size: 6px 6px, 12px 12px; } to { background-size: 12px 12px, 24px 24px; } } @-o-keyframes particle-size { from { background-size: 6px 6px, 12px 12px; } to { background-size: 12px 12px, 24px 24px; } } @keyframes particle-size { from { background-size: 6px 6px, 12px 12px; } to { background-size: 12px 12px, 24px 24px; } } @-webkit-keyframes particle-positon { from { background-position: 60px, 60px; } to { background-position: 140px, 140px; } } @-moz-keyframes particle-positon { from { background-position: 60px, 60px; } to { background-position: 140px, 140px; } } @-ms-keyframes particle-positon { from { background-position: 60px, 60px; } to { background-position: 140px, 140px; } } @-o-keyframes particle-positon { from { background-position: 60px, 60px; } to { background-position: 140px, 140px; } } @keyframes particle-positon { from { background-position: 60px, 60px; } to { background-position: 140px, 140px; } }这个效果使用了 CSS3 radial-gradient（径向渐变或者放射性渐变，另外一种是线性渐变）、repeating-radial-gradient（重复渐变）以及 CSS3 Animation（动画），关于 CSS3 渐变的详细使用方法可以参考这篇文章：CSS3 Gradient，CSS3 动画可以参考这篇文章：CSS3 Animation。
为了便于阅读和学习，效果一的代码精简后如下：
.particle { background-size: 12px 12px; background-color: #000; /*前面公共样式部分box-shadow产生的高亮效果太强，这里重新配置*/ box-shadow: inset 0 15px 15px -5px hsla(0,0%,100%,.25), inset 0 -5px 10px 3px hsla(0,0%,0%,.6), 0 8px 10px 2px hsla(0,0%,0%,.3); /*使用径向渐变和重复渐变来实现背景图片效果*/ background-image: radial-gradient( #555 0px, hsla(0,0%,0%,0) 2px, hsla(0,0%,0%,0) 24px), repeating-radial-gradient( white 0px, black 2px, black 48px); } .particle:hover { /*鼠标悬停的时候执行particle-size和particle-positon两个动画效果*/ animation: particle-size .24s linear infinite, particle-positon .48s linear infinite alternate; } @keyframes particle-size { /*这个名为particle-size的关键帧用来产生背景尺寸变化动画效果*/ from { background-size: 6px 6px, 12px 12px; } to { background-size: 12px 12px, 24px 24px; } } @keyframes particle-positon { /*这个名为particle-positon的关键帧用来产生背景位置变化动画效果*/ from { background-position: 60px, 60px; } to { background-position: 140px, 140px; } }效果二（Cells）的完整代码：
.cells { background-size: 24px 24px; background-color: #fff; background-image: -webkit-repeating-radial-gradient( black 8px, white 12px); background-image: -moz-repeating-radial-gradient( black 8px, white 12px); background-image: -ms-repeating-radial-gradient( black 8px, white 12px); background-image: -o-repeating-radial-gradient( black 8px, white 12px); background-image: repeating-radial-gradient( black 8px, white 12px); } .cells:hover { -webkit-animation: cells 0.4s linear infinite; -moz-animation: cells 0.4s linear infinite; -ms-animation: cells 0.4s linear infinite; -o-animation: cells 0.4s linear infinite; animation: cells 0.4s linear infinite; } @-webkit-keyframes cells { from { background-size: 12px 12px; } to { background-size: 24px 24px; } } @-moz-keyframes cells { from { background-size: 12px 12px; } to { background-size: 24px 24px; } } @-ms-keyframes cells { from { background-size: 12px 12px; } to { background-size: 24px 24px; } } @-o-keyframes cells { from { background-size: 12px 12px; } to { background-size: 24px 24px; } } @keyframes cells { from { background-size: 12px 12px; } to { background-size: 24px 24px; } }效果二代码和效果一代码类似，差别是效果二的背景是只用了重复渐变（repeating-radial-gradient），动画效果只是背景尺寸（background-size）的变化，精简后的代码如下：
.cells { background-size: 24px 24px; background-color: #fff; /*使用重复径向渐变特性来实现背景图片效果*/ background-image: repeating-radial-gradient( black 8px, white 12px); } .cells:hover { /*鼠标悬停的时候执行cells动画效果*/ animation: cells 0.4s linear infinite; } @keyframes cells { /*定义一个名为cells的关键帧用来产生背景尺寸变化动画效果*/ from { background-size: 12px 12px; } to { background-size: 24px 24px; } }效果三（Jelly）的完整代码：
.jelly { background-size: 60px 60px; background-color: hsla(320,80%,60%,1); background-image: -webkit-repeating-radial-gradient( hsla(320,100%,60%,.6) 0px, hsla(220,100%,60%,0) 60%), -webkit-repeating-radial-gradient( hsla(330,100%,40%,1) 12%, hsla(320,80%,60%,1) 24px); background-image: -moz-repeating-radial-gradient( hsla(320,100%,60%,.6) 0px, hsla(220,100%,60%,0) 60%), -moz-repeating-radial-gradient( hsla(330,100%,40%,1) 12%, hsla(320,80%,60%,1) 24px); background-image: -ms-repeating-radial-gradient( hsla(320,100%,60%,.6) 0px, hsla(220,100%,60%,0) 60%), -ms-repeating-radial-gradient( hsla(330,100%,40%,1) 12%, hsla(320,80%,60%,1) 24px); background-image: -o-repeating-radial-gradient( hsla(320,100%,60%,.6) 0px, hsla(220,100%,60%,0) 60%), -o-repeating-radial-gradient( hsla(330,100%,40%,1) 12%, hsla(320,80%,60%,1) 24px); background-image: repeating-radial-gradient( hsla(320,100%,60%,.6) 0px, hsla(220,100%,60%,0) 60%), repeating-radial-gradient( hsla(330,100%,40%,1) 12%, hsla(320,80%,60%,1) 24px); } .jelly:hover { -webkit-animation: jelly 1.4s cubic-bezier(.1,.4,.9,.6) infinite; -moz-animation: jelly 1.4s cubic-bezier(.1,.4,.9,.6) infinite; -ms-animation: jelly 1.4s cubic-bezier(.1,.4,.9,.6) infinite; -o-animation: jelly 1.4s cubic-bezier(.1,.4,.9,.6) infinite; animation: jelly 1.4s cubic-bezier(.1,.4,.9,.6) infinite; } @-webkit-keyframes jelly { from { background-size: 60px 60px, 24px 24px; } 50% { background-size: 120px 120px, 100px 100px; } to { background-size: 24px 24px, 140px 140px; } } @-moz-keyframes jelly { from { background-size: 60px 60px, 24px 24px; } 50% { background-size: 120px 120px, 100px 100px; } to { background-size: 24px 24px, 140px 140px; } } @-ms-keyframes jelly { from { background-size: 60px 60px, 24px 24px; } 50% { background-size: 120px 120px, 100px 100px; } to { background-size: 24px 24px, 140px 140px; } } @-o-keyframes jelly { from { background-size: 60px 60px, 24px 24px; } 50% { background-size: 120px 120px, 100px 100px; } to { background-size: 24px 24px, 140px 140px; } } @keyframes jelly { from { background-size: 60px 60px, 24px 24px; } 50% { background-size: 120px 120px, 100px 100px; } to { background-size: 24px 24px, 140px 140px; } }效果三和效果一的代码类似，不同的地方是动画多了个 50% 关键帧，精简后的代码如下：
.jelly { background-size: 60px 60px; background-color: hsla(320,80%,60%,1); /*使用径向渐变和重复渐变来实现背景图片效果*/ background-image: repeating-radial-gradient( hsla(320,100%,60%,.6) 0px, hsla(220,100%,60%,0) 60%), repeating-radial-gradient( hsla(330,100%,40%,1) 12%, hsla(320,80%,60%,1) 24px); } .jelly:hover { /*鼠标悬停的时候执行jelly动画效果*/ animation: jelly 1.4s cubic-bezier(.1,.4,.9,.6) infinite; } @keyframes jelly { /*定义一个名为jelly的关键帧用来产生背景尺寸变化动画效果*/ from { background-size: 60px 60px, 24px 24px; } 50% { background-size: 120px 120px, 100px 100px; } to { background-size: 24px 24px, 140px 140px; } }效果四（Blobbs）的完整代码：
.blobbs { background-size: 66px 66px; background-color: hsl(200,100%,50%); background-image: -webkit-repeating-radial-gradient( hsla(200,100%,80%,.8) 0px, hsla(200,100%,80%,.5) 4px, hsla(200,100%,80%,0) 50px), -webkit-repeating-radial-gradient( hsla(260,100%, 0%, 0) 0px, hsla(260,100%,50%,.1) 2px, hsla(260,100%, 0%,0) 10px); background-image: -moz-repeating-radial-gradient( hsla(200,100%,80%,.8) 0px, hsla(200,100%,80%,.5) 4px, hsla(200,100%,80%,0) 50px), -moz-repeating-radial-gradient( hsla(260,100%, 0%, 0) 0px, hsla(260,100%,50%,.1) 2px, hsla(260,100%, 0%,0) 10px); background-image: -ms-repeating-radial-gradient( hsla(200,100%,80%,.8) 0px, hsla(200,100%,80%,.5) 4px, hsla(200,100%,80%,0) 50px), -ms-repeating-radial-gradient( hsla(260,100%, 0%, 0) 0px, hsla(260,100%,50%,.1) 2px, hsla(260,100%, 0%,0) 10px); background-image: -o-repeating-radial-gradient( hsla(200,100%,80%,.8) 0px, hsla(200,100%,80%,.5) 4px, hsla(200,100%,80%,0) 50px), -o-repeating-radial-gradient( hsla(260,100%, 0%, 0) 0px, hsla(260,100%,50%,.1) 2px, hsla(260,100%, 0%,0) 10px); background-image: repeating-radial-gradient( hsla(200,100%,80%,.8) 0px, hsla(200,100%,80%,.5) 4px, hsla(200,100%,80%,0) 50px), repeating-radial-gradient( hsla(260,100%, 0%, 0) 0px, hsla(260,100%,50%,.1) 2px, hsla(260,100%, 0%,0) 10px); } .blobbs:hover { -webkit-animation: blobbs-position 6s cubic-bezier(.4,0,.2,1) infinite, blobbs-size .75s cubic-bezier(.4,0,.2,1) infinite alternate; -moz-animation: blobbs-position 6s cubic-bezier(.4,0,.2,1) infinite, blobbs-size .75s cubic-bezier(.4,0,.2,1) infinite alternate; -ms-animation: blobbs-position 6s cubic-bezier(.4,0,.2,1) infinite, blobbs-size .75s cubic-bezier(.4,0,.2,1) infinite alternate; -o-animation: blobbs-position 6s cubic-bezier(.4,0,.2,1) infinite, blobbs-size .75s cubic-bezier(.4,0,.2,1) infinite alternate; animation: blobbs-position 6s cubic-bezier(.4,0,.2,1) infinite, blobbs-size .75s cubic-bezier(.4,0,.2,1) infinite alternate; } @-webkit-keyframes blobbs-position { 0% { background-position: left top, left top; } 25% { background-position: right top, left bottom; } 50% { background-position: right bottom, right bottom; } 75% { background-position: left bottom, right top; } 100% { background-position: left top, left top; } } @-moz-keyframes blobbs-position { 0% { background-position: left top, left top; } 25% { background-position: right top, left bottom; } 50% { background-position: right bottom, right bottom; } 75% { background-position: left bottom, right top; } 100% { background-position: left top, left top; } } @-ms-keyframes blobbs-position { 0% { background-position: left top, left top; } 25% { background-position: right top, left bottom; } 50% { background-position: right bottom, right bottom; } 75% { background-position: left bottom, right top; } 100% { background-position: left top, left top; } } @-o-keyframes blobbs-position { 0% { background-position: left top, left top; } 25% { background-position: right top, left bottom; } 50% { background-position: right bottom, right bottom; } 75% { background-position: left bottom, right top; } 100% { background-position: left top, left top; } } @keyframes blobbs-position { 0% { background-position: left top, left top; } 25% { background-position: right top, left bottom; } 50% { background-position: right bottom, right bottom; } 75% { background-position: left bottom, right top; } 100% { background-position: left top, left top; } } @-webkit-keyframes blobbs-size { from { background-size: 200px 200px, 200px 200px; } to { background-size: 66px 66px, 66px 66px; } } @-moz-keyframes blobbs-size { from { background-size: 200px 200px, 200px 200px; } to { background-size: 66px 66px, 66px 66px; } } @-ms-keyframes blobbs-size { from { background-size: 200px 200px, 200px 200px; } to { background-size: 66px 66px, 66px 66px; } } @-o-keyframes blobbs-size { from { background-size: 200px 200px, 200px 200px; } to { background-size: 66px 66px, 66px 66px; } } @keyframes blobbs-size { from { background-size: 200px 200px, 200px 200px; } to { background-size: 66px 66px, 66px 66px; } }效果四的背景位置变化动画有0%，25%，50%，75%和100%五个关键帧，动画效果更丰富，精简后的代码如下：
.blobbs { background-size: 66px 66px; background-color: hsl(200,100%,50%); background-image: repeating-radial-gradient( hsla(200,100%,80%,.8) 0px, hsla(200,100%,80%,.5) 4px, hsla(200,100%,80%,0) 50px), repeating-radial-gradient( hsla(260,100%, 0%, 0) 0px, hsla(260,100%,50%,.1) 2px, hsla(260,100%, 0%,0) 10px); } .blobbs:hover { animation: blobbs-position 6s cubic-bezier(.4,0,.2,1) infinite, blobbs-size .75s cubic-bezier(.4,0,.2,1) infinite alternate; } @keyframes blobbs-position { 0% { background-position: left top, left top; } 25% { background-position: right top, left bottom; } 50% { background-position: right bottom, right bottom; } 75% { background-position: left bottom, right top; } 100% { background-position: left top, left top; } } @keyframes blobbs-size { from { background-size: 200px 200px, 200px 200px; } to { background-size: 66px 66px, 66px 66px; } }效果五（Chase）的完整代码：
.chase { background-repeat: no-repeat, repeat; background-size: 180px 180px; background-color: hsl(50,100%,70%); background-image: -webkit-repeating-radial-gradient( hsla(50,100%,100%,1) 0px, hsla(50,100%,90%, 1) 10px, hsla(50,100%,70%,.2) 12px, hsla(50,100%,70%,0) 130px), -webkit-repeating-radial-gradient( hsla(20,100%, 50%,0) 20%, hsla(20,100%,50%,.4) 80%, hsla(50,100%,70%, 1) 120px); background-image: -moz-repeating-radial-gradient( hsla(50,100%,100%,1) 0px, hsla(50,100%,90%, 1) 10px, hsla(50,100%,70%,.2) 12px, hsla(50,100%,70%,0) 130px), -moz-repeating-radial-gradient( hsla(20,100%, 50%,0) 20%, hsla(20,100%,50%,.4) 80%, hsla(50,100%,70%, 1) 120px); background-image: -ms-repeating-radial-gradient( hsla(50,100%,100%,1) 0px, hsla(50,100%,90%, 1) 10px, hsla(50,100%,70%,.2) 12px, hsla(50,100%,70%,0) 130px), -ms-repeating-radial-gradient( hsla(20,100%, 50%,0) 20%, hsla(20,100%,50%,.4) 80%, hsla(50,100%,70%, 1) 120px); background-image: -o-repeating-radial-gradient( hsla(50,100%,100%,1) 0px, hsla(50,100%,90%, 1) 10px, hsla(50,100%,70%,.2) 12px, hsla(50,100%,70%,0) 130px), -o-repeating-radial-gradient( hsla(20,100%, 50%,0) 20%, hsla(20,100%,50%,.4) 80%, hsla(50,100%,70%, 1) 120px); background-image: repeating-radial-gradient( hsla(50,100%,100%,1) 0px, hsla(50,100%,90%, 1) 10px, hsla(50,100%,70%,.2) 12px, hsla(50,100%,70%,0) 130px), repeating-radial-gradient( hsla(20,100%, 50%,0) 20%, hsla(20,100%,50%,.4) 80%, hsla(50,100%,70%, 1) 120px); } .chase:hover { -webkit-animation: chase-position 1.2s infinite, chase-size .4s infinite alternate; -moz-animation: chase-position 1.2s infinite, chase-size .4s infinite alternate; -ms-animation: chase-position 1.2s infinite, chase-size .4s infinite alternate; -o-animation: chase-position 1.2s infinite, chase-size .4s infinite alternate; animation: chase-position 1.2s infinite, chase-size .4s infinite alternate; } @-webkit-keyframes chase-position { 0% { background-position: left top, left top; } 25% { background-position: right top, left bottom; } 50% { background-position: right bottom, right bottom; } 75% { background-position: left bottom, right top; } 100% { background-position: left top, left top; } } @-moz-keyframes chase-position { 0% { background-position: left top, left top; } 25% { background-position: right top, left bottom; } 50% { background-position: right bottom, right bottom; } 75% { background-position: left bottom, right top; } 100% { background-position: left top, left top; } } @-ms-keyframes chase-position { 0% { background-position: left top, left top; } 25% { background-position: right top, left bottom; } 50% { background-position: right bottom, right bottom; } 75% { background-position: left bottom, right top; } 100% { background-position: left top, left top; } } @-o-keyframes chase-position { 0% { background-position: left top, left top; } 25% { background-position: right top, left bottom; } 50% { background-position: right bottom, right bottom; } 75% { background-position: left bottom, right top; } 100% { background-position: left top, left top; } } @keyframes chase-position { 0% { background-position: left top, left top; } 25% { background-position: right top, left bottom; } 50% { background-position: right bottom, right bottom; } 75% { background-position: left bottom, right top; } 100% { background-position: left top, left top; } } @-webkit-keyframes chase-size { from { background-size: 120px 120px, 300px 300px; } 50% { background-size: 160px 160px, 150px 150px; } to { background-size: 180px 180px, 100px 100px; } } @-moz-keyframes chase-size { from { background-size: 120px 120px, 300px 300px; } 50% { background-size: 160px 160px, 150px 150px; } to { background-size: 180px 180px, 100px 100px; } } @-ms-keyframes chase-size { from { background-size: 120px 120px, 300px 300px; } 50% { background-size: 160px 160px, 150px 150px; } to { background-size: 180px 180px, 100px 100px; } } @-o-keyframes chase-size { from { background-size: 120px 120px, 300px 300px; } 50% { background-size: 160px 160px, 150px 150px; } to { background-size: 180px 180px, 100px 100px; } } @keyframes chase-size { from { background-size: 120px 120px, 300px 300px; } 50% { background-size: 160px 160px, 150px 150px; } to { background-size: 180px 180px, 100px 100px; } }最后这个效果比前面四个效果都更复杂，背景位置变化动画有0%，25%，50%，75%和100%五个关键帧，背景尺寸的变化动画有0%（from），50%，100%（to）三个关键帧，精简后的代码如下：
.chase { background-repeat: no-repeat, repeat; background-size: 180px 180px; background-color: hsl(50,100%,70%); background-image: repeating-radial-gradient( hsla(50,100%,100%,1) 0px, hsla(50,100%,90%, 1) 10px, hsla(50,100%,70%,.2) 12px, hsla(50,100%,70%,0) 130px), repeating-radial-gradient( hsla(20,100%, 50%,0) 20%, hsla(20,100%,50%,.4) 80%, hsla(50,100%,70%, 1) 120px); } .chase:hover { animation: chase-position 1.2s infinite, chase-size .4s infinite alternate; } @keyframes chase-position { 0% { background-position: left top, left top; } 25% { background-position: right top, left bottom; } 50% { background-position: right bottom, right bottom; } 75% { background-position: left bottom, right top; } 100% { background-position: left top, left top; } } @keyframes chase-size { from { background-size: 120px 120px, 300px 300px; } 50% { background-size: 160px 160px, 150px 150px; } to { background-size: 180px 180px, 100px 100px; } }到此，关于“CSS3怎么实现动画按钮效果”的学习就结束了，希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习，快去试试吧！若想继续学习更多相关知识，请继续关注创新互联网站，小编会继续努力为大家带来更多实用的文章！
