CSS3 click button to achieve background gradient animation effect

The rendering is as follows:

The example code is as follows:

nbsp;html>


<meta>
<meta>
<title>css3给按钮添加背景渐变动画</title>
<!--
@author：SM
@email:sm0210@qq.com
@desc：
css3给按钮添加背景渐变动画
-->
<style>
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{ <p>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%); 
} <p>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%); 
} <p>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%);
} <p>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%);
} <p>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%);
} <p>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%);
}
}
</style>


<button>按钮</button> <p>
</p>

Summary
The above is to use CSS3 to realize the background gradient animation when clicking the button Friends who are interested can run the code themselves to see the effect, which will be more helpful for understanding. I hope the content of this article can be of some help to everyone's study or work.

For more CSS3 click button to achieve background gradient animation effects, please pay attention to the PHP Chinese website!