/*.banner-about {background: url(../images/sub-about.jpg) 50% 0 no-repeat;}
.banner-news {background: url(../images/sub-news.jpg) 50% 0 no-repeat;}
.banner-pro {background: url(../images/sub-pro.jpg) 50% 0 no-repeat;}
.banner-contact {background: url(../images/sub-contact.jpg) 50% 0 no-repeat;}*/
/*重写一下search-box属性*/
.search-box {top: 30px;}
.sub-banner {height:400px;background: url(../images/sub01.jpg) 50% 0 no-repeat;}