box-shadow: X轴 Y轴 发光度 颜色；
<!DOCTYPE html><html>
<head>
<meta charset="utf-8">
<title>CSS3发光字</title>
<style>
*{ padding:0margin:0font-size:14px }
body{ background: #f3f5f5 }
.d{ width:100%text-align:centermargin:20px auto }
.a , .n{ text-decoration: nonefont-size:6emfont-family:"微软雅黑" }
.a{ color:blue }
.a:link{ color:blue }
.n{ color:#FFFtext-shadow: 0 0 10px #000,0 0 25px #000 }
.def , .h:hover{ animation: run 2.4s infinite-webkit-animation: run 2.4s infinite-moz-animation: run 2.4s infinite
-ms-animation: run 2.4s infinite-o-animation: run 2.4s infinite }
@-webkit-keyframes run{
0%,100%{ color:#ffftext-shadow:0 0 10px blue,0 0 10px blue }
50%{ text-shadow:0 0 10px blue,0 0 40px blue }
}
@-moz-keyframes run{
0%,100%{ color:#ffftext-shadow:0 0 10px blue,0 0 10px blue }
50%{ text-shadow:0 0 10px blue,0 0 40px blue }
}
@-o-keyframes run{
0%,100%{ color:#ffftext-shadow:0 0 10px blue,0 0 10px blue }
50%{ text-shadow:0 0 10px blue,0 0 40px blue }
}
@-ms-keyframes run{
0%,100%{ color:#ffftext-shadow:0 0 10px blue,0 0 10px blue }
50%{ text-shadow:0 0 10px blue,0 0 40px blue }
}
@keyframes run{
0%,100%{ color:#ffftext-shadow:0 0 10px blue,0 0 10px blue }
50%{ text-shadow:0 0 10px blue,0 0 40px blue }
}
</style>
</head>
<body>
<hr>
字体不带动效：
<div class="d">
<a href="javascript:void(0)" class="n">如何使用CSS3制作特效发光字</a>
</div>
<hr>
字体自带动效：
<div class="d">
<a href="javascript:void(0)" class="a def">不记得你的名字，但记得你的死期。</a>
</div>
<hr>
字体悬浮动效：
<div class="d">
<a href="javascript:void(0)" class="a h">剑之所至，心之所往。</a>
</div>
<hr>
</body>
</html>
一个使用伪元素来实现边框逐渐发光的代码，主要用到scale和opacity这两个属性。Html代码
<div>
<img src="http://tva2.sinaimg.cn/crop.0.0.180.180.180/6830a53bjw8f2qo4xzc2zj20500500t0.jpg"/>
<div>
<p>CSS3 逐渐发光的方格边框</p>
<p>CSS3 逐渐发光的方格边框</p>
</div>
</div>
Css代码
.light{
background: #fff
width: 180px
height: 180px
margin: 100px auto
position: relative
text-align: center
color: #333
transform:translate3d(0,0,0)
}
.light-inner{
padding: 60px 30px 0
pointer-events: none
position: absolute
left: 0
top: 0
bottom: 0
right: 0
text-align: center
transition: background 0.35s
backface-visibility: hidden
}
.light-inner:before, .light-inner:after{
display: block
content: ""
position: absolute
left: 30px
top: 30px
right: 30px
bottom: 30px
border: 1px solid #fff
opacity: 0
transition: opacity 0.35s, transform 0.35s
}
.light-inner:before{
border-left: 0
border-right: 0
transform:scaleX(0,1)
}
.light-inner:after{
border-top: 0
border-bottom: 0
transform: scaleY(1,0)
}
.light:hover .light-inner{
background: #458fd2
}
.light:hover .light-inner:before, .light:hover .light-inner:after{
opacity: 1
transform: scale3d(1,1,1)
}
.light-inner p{
transition: opacity .35s, transform 0.35s
transform: translate3d(0,20px,0)
color: #fff
opacity: 0
line-height: 30px
}
.light:hover .light-inner p{
transform: translate3d(0,0,0)
opacity: 1
}
