css如何实现蒙版效果
重要知识点:(推荐教程:css快速入门)1background-color:#fff;filter:Alpha(Opacity=60);opacity:0.6;样式:1234<style> .back {background:url(images/coupon-logo.gif) no-repeat;} .top {height:100px;background-color:#f
重要知识点:(推荐教程:css快速入门)1background-color:#fff;filter:Alpha(Opacity=60);opacity:0.6;样式:1234<style> .back {background:url(images/coupon-logo.gif) no-repeat;} .top {height:100px;background-color:#f