@charset "utf-8";
*{padding:0;margin:0;}
a{text-decoration:none;cursor:pointer;}
.clr{clear:both;overflow:hidden;height:0;width:0;}

.relative{position:relative;width:100%; }
#home_bannera{text-decoration:none;cursor:pointer;}
#home_banner{max-width:1440px;margin:0 auto; }
.maxwidth{width:990px;margin:0 auto;}
#big_img{height:450px;background:no-repeat center}
#small_img{height:114px;padding-top:13px;position:absolute;top:-127px;width:100%;background:url(http://www.zitin.com/tech-banner/images/bnbg.png) no-repeat center 0;}
#small_pre,#small_next,#small_imgs{height:104px;line-height:104px;float:left;font-size:22px;}
#small_pre,#small_next{width:22px;display:block;}
#small_pre{margin-right:17px;}
#small_next{margin-left:17px;}
#small_pre:hover{background-position:-22px center;}
#small_next:hover{background-position:-66px center;}
#small_imgs{width:912px;overflow:hidden;}
#small_imgs .item{float:left;padding:0 16px;}
#small_imgs .item .img{cursor:pointer;width:144px;height:92px;padding:3px;padding-top:10px;background:url(http://www.zitin.com/tech-banner/images/banner_bg.png) no-repeat center bottom;}
#small_imgs .item .img img{width:144px;height:90px;}
#small_imgs .item .active{background:url(http://www.zitin.com/tech-banner/images/banner_bg_a.png) no-repeat center bottom;}