.www51buycom { width:100%; height:450px; position:relative; }

/*数字按钮样式*/
.www51buycom .num { overflow:hidden; width:100%; height:20px; position: absolute; bottom:20px;zoom:1; z-index:3}
.www51buycom .num ul{ width:105px; margin:0 auto;}
.www51buycom .num li { width:20px; height: 20px; line-height: 20px; text-align: center; margin:0px 3px; font-weight: 400; font-family: "微软雅黑", Arial; color: #FFFFFF; background: #444444; border-radius:50%; cursor:pointer; float: left; }
.www51buycom .num li.on { background: #ed6d00; } /*当前项*/

/*上一个  下一个*/
.www51buycom .prev,
.www51buycom .next { display: none; width: 40px; height: 100px; background: url(../images/btn.png) no-repeat; position: absolute; top:200px;}
.www51buycom .prev {left:40px;  }
.www51buycom .next { right:40px; background-position: right }