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How to use css3 to achieve shock wave effect
- php中世界最好的语言Original
- 2018-03-20 14:24:151453browse
This time I will bring you css3 to achieve the shock wave effect. What are the precautions to achieve the shock wave effect with css3? The following is a practical case, let’s take a look.
Recently, the following shock wave effect will appear when clicking many browser buttons. Out of curiosity, I studied and implemented this effect by referring to the information on the Internet.Implementation ideas:
Observe that the wave changes from small to large. The css3 attribute changes involved include width, height, left, top, and opacity. First, implement the shock wave through pseudo-classes layer. At the same time, you need to set the center point position before and after the shock wave (a little mathematical knowledge is involved here: draw a picture to calculate the position of the two points). Finally, set the transition-duration: 0 to achieve instantaneous changes. PS learned that you can use a:active to simulate the mouse. The effect of clicking Simply draw the picture below (very easy):
<html>
<head>
<meta charset="UTF-8">
<title>实现冲击波--数学知识很重要</title>
<style>
*{
margin:0;
padding:0;
box-sizing:border-box;
}
html,body{
font-family:"微软雅黑";
}
.wave{
position:relative;
float:left;
width:50%;
height:420px;
}
.wave a{
position:absolute;
top:50%;
left:50%;
transform:translate(-50%,-50%);
display:inline-block;
width:120px;
height:50px;
/*margin-left:-60px;
margin-top:-25px;*/
line-height:50px;
text-align:center;
border-radius:5px;
color:#fff;
font-size:16px;
cursor:pointer;
/*overflow:hidden;*/
}
#wave1{
background-color:#00BFFF;
}
#wave2{
background-color:#009955;
}
#wave1 a{
background-color:burlywood;
}
#wave2 a{/*宽度不确定长度*/
width:50%;
height:50px;
background-color:cadetblue;
}
.wave a:after{
/*画图
，假设left:0;top:0然后画出两个中心点的水平和垂直距离*/
content: "";
display: block;
position: absolute;
left: -40px;
top: -75px;
width: 200px;
height: 200px;
background: rgba(255,255,255,0.8);
border-radius: 50%;
opacity:0;
transition: all 1s;
}
.wave a:active:after{
/*位于中间即是a的中点*/
width: 0;
height: 0;
left:60px;
top: 25px;
opacity: 1;
transition-duration: 0s;
}
#wave2 a:after{
left:50%;
top:50%;
transform:translate(-50%,-50%);
}
#wave2 a:active:after{
left:50%;
top:50%;
transform:translate(-50%,-50%);
}
</style>
</head>
<body>
<!--实现冲击波按钮确定长度-->
<p class="wave" id="wave1">
<a>点我</a>
</p>
<!--实现冲击波按钮不确定长度时-->
<p class="wave" id="wave2">
<a>点我哈哈</a>
</p>
</body>
</html> Effect achieved:
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