.banner{ width:100%; height:100%; position:relative}
.banner .bd{ width:100%; height:100%}
.banner .bd ul{ width:100%; height:100%!important}
.banner .bd li{ width:100%; height:100%}
.banner .prev{ display:block; width:54px; height:226px; background:url(prev.png) center center no-repeat rgba(00,00,00,0.25); position:absolute; left:50%; margin-left:-627px; top:50%; margin-top:-113px; z-index:9; cursor:pointer; transition:all 0.3s linear}
.banner .next{ display:block; width:54px; height:226px; background:url(next.png) center center no-repeat rgba(00,00,00,0.25); position:absolute; right:50%; margin-right:-627px; top:50%; margin-top:-113px; z-index:9;cursor:pointer; transition:all 0.3s linear}
.banner .prev:hover{background:url(prev.png) center center no-repeat rgba(00,00,00,0.5);}
.banner .next:hover{background:url(next.png) center center no-repeat rgba(00,00,00,0.5);}