經常看到圖片有一道高亮光弧閃過很炫的效果，其原理很簡單可以用css3動畫就可以做出這樣的效果，用css3動畫控制position:absolute的left值，從左向右閃過，這個具體的請看以下代碼哈。效果截圖如下：
鼠標houver在盒子box上時動畫會停止，代碼如下：
<!Doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk2312"/>
<title>CSS3動畫實現高亮光弧效果</title>
<style type="text/css">
body{margin:0;padding:0;}
.box{width:1000px;margin:200px auto;height:500px;position:relative;text-align:center;}
.box:hover .rolled{
-webkit-animation-play-state:paused;
-moz-animation-play-state:paused;
-o-animation-play-state:paused;
-ms-animation-play-state:paused;
}
.rolled{
position:absolute;
top: 0;
width:80px;
height:500px;
background: -moz-linear-gradient(left,rgba(255,255,255,0)0,rgba(255,255,255,.2)50%,rgba(255,255,255,0)100%);
background: -webkit-gradient(linear,left top,right top,color-stop(0%,rgba(255,255,255,0)),color-stop(50%,rgba(255,255,255,.2)),color-stop(100%,rgba(255,255,255,0)));
background: -webkit-linear-gradient(left,rgba(255,255,255,0)0,rgba(255,255,255,.2)50%,rgba(255,255,255,0)100%);
background: -o-linear-gradient(left,rgba(255,255,255,0)0,rgba(255,255,255,.2)50%,rgba(255,255,255,0)100%);
-webkit-transform: skewX(-25deg);
-moz-transform: skewX(-25deg);
-webkit-animation:rolled 2.5s .2s ease both infinite;
-moz-animation:rolled 2.5s .2s ease both infinite;
-o-animation:rolled 2.5s .2s ease both infinite;
-ms-animation:rolled 2.5s .2s ease both infinite;
overflow: hidden;
}
@-webkit-keyframes rolled{
0%{left:-150px ;}
100%{left:920px;}
}
@-moz-keyframes rolled{
0%{left:-150px ;}
100%{left:920px;}
}
@-o-keyframes rolled{
0%{left:-150px ;}
100%{left:920px;}
}
@-ms-keyframes rolled{
0%{left:-150px ;}
100%{left:920px;}
}
@keyframes rolled{
0%{left:-150px ;}
100%{left:920px;}
}
</style>
</head>
<body>
<div class="box">
<img src="http://tangjiusheng.com/d/file/css3/2017-05-24/f2ff69d3c4e94e4a65c9f4ab203d4811.jpg">
<div class="rolled"></div>
</div>
</body>
</html>
查看效果演示：http://tangjiusheng.com/css3/page01.html
另外一種效果，鼠標houver時效果才出現（觸發），代碼如下：
<!Doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk2312"/>
<title>CSS3實現高亮光弧效果</title>
<style type="text/css">
body{
margin: 0;padding: 0;
}
.box{width:1000px;margin:200px auto;height:500px;position:relative;text-align:center;}
a.floor:before{
display: block;
height: 500px;
}
a.floor:hover:before{
-webkit-transition: left 1.5s;
-moz-transition: left 1.5s;
transition: left 1.5s;
left: 920px;
}
a.floor:before{
content: "";
position: absolute;
width: 80px;
height:500px;
top: 0;
left: -150px;
overflow: hidden;
background: -moz-linear-gradient(left,rgba(255,255,255,0)0,rgba(255,255,255,.2)50%,rgba(255,255,255,0)100%);
background: -webkit-gradient(linear,left top,right top,color-stop(0%,rgba(255,255,255,0)),color-stop(50%,rgba(255,255,255,.2)),color-stop(100%,rgba(255,255,255,0)));
background: -webkit-linear-gradient(left,rgba(255,255,255,0)0,rgba(255,255,255,.2)50%,rgba(255,255,255,0)100%);
background: -o-linear-gradient(left,rgba(255,255,255,0)0,rgba(255,255,255,.2)50%,rgba(255,255,255,0)100%);
-webkit-transform: skewX(-25deg);
-moz-transform: skewX(-25deg);
}
</style>
</head>
<body>
<div class="box">
<a class="floor" href="#"><img src="http://tangjiusheng.com/d/file/css3/2017-05-24/f2ff69d3c4e94e4a65c9f4ab203d4811.jpg"></a>
</div>
</body>
</html>
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原文鏈接：http://tangjiusheng.com/css3/125.html
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