请教图片效果问题：做如东方财富网首页顶部图片效果
请教一个图片效果问题：做如东方财富网首页顶部图片效果和弹出可收缩广告图 ( https://www.eastmoney.com )已找到样式代码但不知道放在论坛那个文件上可以做出这样效果，请教各位大侠
<style type="text/css">
.baokuang{height:800px;width:100%;background:url(//g1.dfcfw.com/g4/202106/20210623175012.png) repeat-x 0 0 #FFF;}
.baokuang .bkImg,.baokuang .bkImg .cImgDiv {background:url(//g1.dfcfw.com/g4/202106/20210623182133.png) no-repeat center top;}
.baokuang .bkImg {width:100%; height:800px;margin:0 auto;}
.baokuang .bkImg .cImgDiv{width:1000px; height:40px; margin:0 auto; position:relative;}
.baokuang .bkImg .clickMap { display:block; height:40px; width:100%; text-indent:-100em; overflow:hidden;}
.baokuang .bkImg .close{background:url(//g1.dfcfw.com/g4/202106/20210623120249.png) no-repeat;width:44px; height:18px;cursor:pointer; position:absolute; right:0px; bottom:20px; text-indent:-100em; overflow:hidden;}
.pageCont { background:#FFF; height:0; overflow:hidden; margin-top:-760px;}
.top-advert{margin-top:0; padding-top: 0;}
.emfloat_wrapper{margin-top:30px;}
</style>
</head>
<body>
<div id="baokuangBox" class="baokuang">
<div class="bkImg">
<div class="cImgDiv">
<a class="clickMap" > </a>
<span class="close">关闭</span>
</div>
</div>
</div>
<div id="pageCont" class="pageCont"></div>
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