.floadAd { position: absolute;z-index: 9999; display:none; }  
.floadAd .item { display: block; }  
.floadAd .item img { vertical-align: bottom; border: none;}

.bg001
{
margin: 0 auto;
background: url(/tielrsj/resource/cms/2021/06/zn1000.jpg) center top no-repeat;
height: 160px;
width:1000px;
}