css3给按钮添加背景渐变动画

button {

color:#FFF;

font-size:16px;

outline:none;

width:300px;

height:48px;

background:#26A1D9;

border:none;

-webkit-border-radius:5px;

border-radius:5px;

}

button:active{

outline:none;

background:#208FC1;

/*执行动画*/

-webkit-animation:showBtn 0.5s 1;

animation:showBtn 0.5s 1;

/*停止在最后一帧*/

-webkit-animation-fill-mode:forwards;

animation-fill-mode:forwards;

}

/*

定义动画

*/

@-webkit-keyframes showBtn{

10%{

background:-webkit-radial-gradient(Circle,#1E7AA5 28%, #2287B7 30%, #2287B7 48%,#208FC1 60%);

background:radial-gradient(Circle,#1E7AA5 28%, #2287B7 30%, #2287B7 48%,#208FC1 60%);

}

20%{

background:-webkit-radial-gradient(Circle,#1E7AA5 32%, #2287B7 34%, #2287B7 52%,#208FC1 60%);

background:radial-gradient(Circle,#1E7AA5 32%, #2287B7 34%, #2287B7 52%,#208FC1 60%);

}

40%{

background:-webkit-radial-gradient(Circle,#1E7AA5 34%, #2287B7 36%, #2287B7 54%,#208FC1 60%);

background:radial-gradient(Circle,#1E7AA5 34%, #2287B7 36%, #2287B7 54%,#208FC1 60%);

}

60%{

background:-webkit-radial-gradient(Circle,#1E7AA5 36%, #2287B7 38%, #2287B7 56%,#208FC1 60%);

background:radial-gradient(Circle,#1E7AA5 36%, #2287B7 38%, #2287B7 56%,#208FC1 60%);

}

80%{

background:-webkit-radial-gradient(Circle,#1E7AA5 38%, #2287B7 40%, #2287B7 58%,#208FC1 60%);

background:radial-gradient(Circle,#1E7AA5 38%, #2287B7 40%, #2287B7 58%,#208FC1 60%);

}

100%{

background:-webkit-radial-gradient(Circle,#1E7AA5 40%, #2287B7 42%, #2287B7 60%,#208FC1 60%);

background:radial-gradient(Circle,#1E7AA5 40%, #2287B7 42%, #2287B7 60%,#208FC1 60%);

}

}

按钮

效果：

6631610924442671787.gif