感应鼠标的图片遮罩动画效果 html, body, div,ul, li { margin: 0; padding: 0; } div.examples_body { width: 750px; margin: 0px auto; clear: both; overflow: hidden; } .bannerHolder { width: 726px; margin: 20px 0 15px 0; padding: 20px 10px 20px 10px; background-color: #f7f7f7; border: 1px solid #eee; overflow: hidden