老师为什么filter:alpha(opacity=20)无法使用
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | <!DOCTYPE html><html><head> <meta charset="utf-8"> <title>轮播图</title> <link rel="stylesheet" type="text/css" href="CSS/lunbotu.css"> <script type="text/javascript" src="JS/lunbotu.JS"></script></head><body> <div class="main"> <!--图片轮播--> <div class="banner"> <a href=""> <div class="banner-slide slide1 slide-active"> </div> </a> <a href=""> <div class="banner-slide slide2"> </div> </a> <a href=""> <div class="banner-slide slide3"> </div> </a> </div> <!--上一张 下一张--> <a href="javascript:void(0)" class="button prev"></a> <a href="javascript:void(0)" class="button next"></a> </div></body></html> |
*{
margin: 0;
padding: 0;
}
ul{
list-style: none;
}
body{
font-family:"微软雅黑";
color: #14191e;
}
.main{
width: 1200px;
height: 460px;
margin: 30px auto;
overflow: hidden;
position: relative;
}
.banner{
width: 1200px;
height: 460px;
overflow: hidden;
position:relative;
}
.banner-slide{
width: 1200px;
height: 460px;
background-repeat:no-repeat;
position: absolute;
display: none;
}
.slide-active{
display: block;
}
.slide1{
background-image:url("../img/bg1.jpg");
}
.slide2{
background-image:url("../img/bg2.jpg");
}
.slide3{
background-image:url("../img/bg3.jpg");
}
.button{
position: absolute;
width: 40px;
height: 80px;
left: 244px;
top: 50%;
margin-top: -40px;
background:url(../img/arrow.png) no-repeat center center;
}
.button:hover{
background-color:#333;
opacity: 0.2;
filter:alpha(opacity=20);/*透明度的修改*/
}
.prev{
transform:rotate(180deg);/*控制旋转角度*/
}
.next{
left:auto;
right: 0px;
}
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