@keyframes 動畫名{}

@-處理兼容性-keyframes
animation: expand 0.6s ease-out infinite;[動畫名 動畫執行時間 動畫速度 動畫次數]
-處理兼容-animation:

    A 

html,body{ width: 98%; height: 98%; } /*方法二*/ body{ display: flex; align-items: center;/****水平居中****/ justify-content: center;/*垂直居中*/ } .parent{ overflow: hidden; width: 500px; height: 400px; background: orange; /*方法一*/ /*margin: 0 auto;*/ position: relative; /*top: 50%;*/ /*margin-top: -200px;*//***此行等于transform:translateY(-50%)******/ } .parent div{ width: 100px; height:100px; margin: 0 auto; margin-top: 20px; } .main{ position: relative; /*top:150px;*/ background: pink; -webkit-animation: expand 0.6s ease-out infinite; -moz-animation: expand 0.6s ease-out infinite; -o-animation: expand 0.6s ease-out infinite; -ms-animation: expand 0.6s ease-out infinite; animation: expand 0.6s ease-out infinite; } .d2{ background: green; -webkit-animation: bounce 3s ease-out infinite; -moz-animation: bounce 3s ease-out infinite; -o-animation: bounce 3s ease-out infinite; -ms-animation: bounce 3s ease-out infinite; animation: bounce 3s ease-out infinite; } @keyframes bounce { 0% { transform: translate3d(0, -25px, 0); opacity: 0; } 25% { transform: translate3d(0, 10px, 0); } 50% { transform: translate3d(0, -6px, 0); } 75% { transform: translate3d(0, 2px, 0); } 100% { transform: translate3d(0, 0, 0); opacity: 1; } } @-webkit-keyframes bounce { 0% { transform: translate3d(0, -25px, 0); opacity: 0; } 25% { transform: translate3d(0, 10px, 0); } 50% { transform: translate3d(0, -6px, 0); } 75% { transform: translate3d(0, 2px, 0); } 100% { transform: translate3d(0, 0, 0); opacity: 1; } } @-moz-keyframes bounce { 0% { transform: translate3d(0, -25px, 0); opacity: 0; } 25% { transform: translate3d(0, 10px, 0); } 50% { transform: translate3d(0, -6px, 0); } 75% { transform: translate3d(0, 2px, 0); } 100% { transform: translate3d(0, 0, 0); opacity: 1; } } @-o-keyframes bounce { 0% { transform: translate3d(0, -25px, 0); opacity: 0; } 25% { transform: translate3d(0, 10px, 0); } 50% { transform: translate3d(0, -6px, 0); } 75% { transform: translate3d(0, 2px, 0); } 100% { transform: translate3d(0, 0, 0); opacity: 1; } } @keyframes expand { 0% { transform: scale3d(1, 0, 1); } 25% { transform: scale3d(1, 1.2, 1); } 50% { transform: scale3d(1, 0.85, 1); } 75% { transform: scale3d(1, 1.05, 1); } 100% { transform: scale3d(1, 1, 1); } } @-webkit-keyframes expand { 0% { transform: scale3d(1, 0, 1); } 25% { transform: scale3d(1, 1.2, 1); } 50% { transform: scale3d(1, 0.85, 1); } 75% { transform: scale3d(1, 1.05, 1); } 100% { transform: scale3d(1, 1, 1); } } @-moz-keyframes expand { 0% { transform: scale3d(1, 0, 1); } 25% { transform: scale3d(1, 1.2, 1); } 50% { transform: scale3d(1, 0.85, 1); } 75% { transform: scale3d(1, 1.05, 1); } 100% { transform: scale3d(1, 1, 1); } } @-o-keyframes expand { 0% { transform: scale3d(1, 0, 1); } 25% { transform: scale3d(1, 1.2, 1); } 50% { transform: scale3d(1, 0.85, 1); } 75% { transform: scale3d(1, 1.05, 1); } 100% { transform: scale3d(1, 1, 1); } } /*transform:rotate3d(x,y,z,deg);*/ /*transform:rotate3d(1，1,0,45deg);*/ .d3{ background: #e4393c; -webkit-animation: move 3s linear infinite; -moz-animation: move 3s linear infinite; -ms-animation: move 3s linear infinite; -o-animation: move 3s linear infinite; animation: move 3s linear infinite; } @-o-keyframes move{ 25%{ transform:rotateY(45deg); } 50%{ transform:rotateY(360deg); } 75%{ transform:rotateX(45deg); } 100%{ transform:rotateX(180deg); } } @-moz-keyframes move{ 25%{ transform:rotateY(45deg); } 50%{ transform:rotateY(360deg); } 75%{ transform:rotateX(45deg); } 100%{ transform:rotateX(180deg); } } @-webkit-keyframes move{ 25%{ transform:rotateY(45deg); } 50%{ transform:rotateY(360deg); } 75%{ transform:rotateX(45deg); } 100%{ transform:rotateX(180deg); } } @keyframes move{ 25%{ transform:rotateY(45deg); } 50%{ transform:rotateY(360deg); } 75%{ transform:rotateX(45deg); } 100%{ transform:rotateX(180deg); } }