DIV 居中

.d {
 width: 966px;
 height:538px;
 text-align:center;
 top: 0px;
 margin-top: 0px;
 padding-top:0px;
 margin-right: auto;
 margin-bottom: 0;
 margin-left: auto;
 background-image: url(图片路径);
 background-repeat: no-repeat;
 background-position: center top; 
}