css keyframe 四月 03, 2017 @keyframes myfirst { frame {background: red;} to {background: yellow;} } @keyframes myfirst { 0% {background: red;} 25% {background: yellow;} 50% {background: blue;} 100% {background: green;} } <div style="animation: myfirst 5s;">asd</div> 阅读全文