#top .logo{ height: 100px; } /*多级菜单导航*/ .header .nav>li:hover{box-sizing: border-box;background: #ff9d10;} /*一级菜单导航*/ .header .nav li ul li:hover{background: #ff9d10;}/*二级菜单变化*/ .header .nav li .third-nav li:hover{opacity: 1;}/*三级菜单变化*/ .header .nav li{ padding: 0 15px; }/*间距*/ /*banner高度*/ .banner a, .fullSlide, .fullSlide .bd li, .fullSlide .bd li a{ height: 470px; } /*banner