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這篇文章主要介紹“CSS3怎么實現動畫按鈕效果”，在日常操作中，相信很多人在CSS3怎么實現動畫按鈕效果問題上存在疑惑，小編查閱了各式資料，整理出簡單好用的操作方法，希望對大家解答”CSS3怎么實現動畫按鈕效果”的疑惑有所幫助！接下來，請跟著小編一起來學習吧！
在線演示地址：http://jsfiddle.net/lhb25/9EcuV/8/embedded/result/
HTML 部分非常簡單，五種效果對應的class為：praticle、cells、jelly、blobbs、chase，代碼如下：
<section> <div class="particle"></div> <div class="cells"></div> <div class="jelly"></div> <div class="blobbs"></div> <div class="chase"></div> </section>
這些精美的效果用到了 CSS3 border-radius（圓角）、box-shadow（陰影）、transition（變形）、transform（轉換）和 animation（動畫）等特性，公共部分的完整代碼如下：
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); }這段代碼看起來很長很復雜，其實大部分是兼容性代碼，精簡以后的代碼如下：
section > div { display: inline-block; position: relative; width: 200px; height: 200px; margin: 0px auto; /*對于正方形元素border-radius設置為50%剛好變成圓形*/ border-radius: 50%; /*寬度為10px的、不透明度為0.7的黑色邊框效果*/ border: 10px solid hsla(0,0%,0%,.7); /*通過邊框陰影實現立體按鈕效果，inset是內陰影效果*/ 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; /*初始縮放0.66倍*/ transform: scale(.66); /*在失去焦點時根據自定義的貝塞爾時間曲線做動畫變換效果*/ transition: transform .5s cubic-bezier(.32,0,.15,1); } section > div:hover { cursor: none; /*懸停時恢復原始大小*/ transform: scale(1); /*鼠標懸停時根據自定義的貝塞爾時間曲線做動畫變換效果*/ transition: transform .2s cubic-bezier(.32,0,.15,1); }上面的代碼中用到了貝塞爾曲線，在數學的數值分析領域中，貝塞爾曲線又稱貝賽爾曲線（Bézier曲線）是電腦圖形學中相當重要的參數曲線。更高維度的廣泛化貝塞爾曲線就稱作貝塞爾曲面，其中貝塞爾三角是一種特殊的實例。
貝塞爾曲線于1962年，由法國工程師皮埃爾·貝塞爾（Pierre Bézier）所廣泛發表，他運用貝塞爾曲線來為汽車的主體進行設計。貝塞爾曲線最初由Paul de Casteljau于1959年運用de Casteljau算法開發，以穩定數值的方法求出貝塞爾曲線。
想更加深入的了解貝塞爾曲線可以到維基百科了解：貝塞爾曲線。下面是五種效果的完整代碼：
效果一（Praticle）的完整代碼：
.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; } }這個效果使用了 CSS3 radial-gradient（徑向漸變或者放射性漸變，另外一種是線性漸變）、repeating-radial-gradient（重復漸變）以及 CSS3 Animation（動畫），關于 CSS3 漸變的詳細使用方法可以參考這篇文章：CSS3 Gradient，CSS3 動畫可以參考這篇文章：CSS3 Animation。
為了便于閱讀和學習，效果一的代碼精簡后如下：
.particle { background-size: 12px 12px; background-color: #000; /*前面公共樣式部分box-shadow產生的高亮效果太強，這里重新配置*/ 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); /*使用徑向漸變和重復漸變來實現背景圖片效果*/ 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 { /*鼠標懸停的時候執行particle-size和particle-positon兩個動畫效果*/ animation: particle-size .24s linear infinite, particle-positon .48s linear infinite alternate; } @keyframes particle-size { /*這個名為particle-size的關鍵幀用來產生背景尺寸變化動畫效果*/ from { background-size: 6px 6px, 12px 12px; } to { background-size: 12px 12px, 24px 24px; } } @keyframes particle-positon { /*這個名為particle-positon的關鍵幀用來產生背景位置變化動畫效果*/ from { background-position: 60px, 60px; } to { background-position: 140px, 140px; } }效果二（Cells）的完整代碼：
.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; } }效果二代碼和效果一代碼類似，差別是效果二的背景是只用了重復漸變（repeating-radial-gradient），動畫效果只是背景尺寸（background-size）的變化，精簡后的代碼如下：
.cells { background-size: 24px 24px; background-color: #fff; /*使用重復徑向漸變特性來實現背景圖片效果*/ background-image: repeating-radial-gradient( black 8px, white 12px); } .cells:hover { /*鼠標懸停的時候執行cells動畫效果*/ animation: cells 0.4s linear infinite; } @keyframes cells { /*定義一個名為cells的關鍵幀用來產生背景尺寸變化動畫效果*/ from { background-size: 12px 12px; } to { background-size: 24px 24px; } }效果三（Jelly）的完整代碼：
.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碼類似，不同的地方是動畫多了個 50% 關鍵幀，精簡后的代碼如下：
.jelly { background-size: 60px 60px; background-color: hsla(320,80%,60%,1); /*使用徑向漸變和重復漸變來實現背景圖片效果*/ 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 { /*鼠標懸停的時候執行jelly動畫效果*/ animation: jelly 1.4s cubic-bezier(.1,.4,.9,.6) infinite; } @keyframes jelly { /*定義一個名為jelly的關鍵幀用來產生背景尺寸變化動畫效果*/ 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）的完整代碼：
.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; } }效果四的背景位置變化動畫有0%，25%，50%，75%和100%五個關鍵幀，動畫效果更豐富，精簡后的代碼如下：
.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）的完整代碼：
.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; } }最后這個效果比前面四個效果都更復雜，背景位置變化動畫有0%，25%，50%，75%和100%五個關鍵幀，背景尺寸的變化動畫有0%（from），50%，100%（to）三個關鍵幀，精簡后的代碼如下：
.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，關于“CSS3怎么實現動畫按鈕效果”的學習就結束了，希望能夠解決大家的疑惑。理論與實踐的搭配能更好的幫助大家學習，快去試試吧！若想繼續學習更多相關知識，請繼續關注億速云網站，小編會繼續努力為大家帶來更多實用的文章！
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