body {
            margin: 0px;
            padding: 0px;
            background: #000;
        }
        #top {
            height: 50px;
            background: #fff;
        }
        #header {
            height: 50px;
            line-height: 50px;
            width: 1000px;
            margin: 0 auto;
        }
        #logo {
            float: left;
            background: url(/dm-da839ed25612b301/compare/style/KLUv_SAiEQEAaHR0cDovL3d3dy5jaWtlLmNuL2ltYWdlcy9sb2dvLnBuZw) 20px center no-repeat;
            background-size: 90px 30px;
            width: 166px;
            height: 50px;
            -webkit-transition: background .5s ease-in-out;
            -moz-transition: background .5s ease-in-out;
            transition: background .5s ease-in-out;
        }
        #aboutus {
            background: url(/dm-da839ed25612b301/category/style/KLUv_SAoQQEAaHR0cDovL3d3dy5jaWtlLmNuL2ltYWdlcy9iZy5hYm91dHVzLmpwZw) no-repeat center center;
            background-color: #010101;
            height: 800px;
            overflow: hidden;
        }
        #dd {
            width: 920px;
            margin: 0 auto;
            bottom: 0px;
            height: 180px;
            line-height: 30px;
            padding: 40px;
            background: rgba(255,255,255, 0.8);
            font-size: 16px;
            color: #222;
            margin-top: 160px;
            font-weight: normal;
            text-align: left;
            }
        #bottom {
            text-align: center;
            font-size: 14px;
            color: #aaa;
            overflow:hidden;
            line-height: 40px;
            padding: 30px 0px;
        }
        h1 {
            margin: 0px;
            padding: 0px;
            float: left;
            font-size: 26px;
            color: #666;
            margin-left: -30px;
            font-weight: normal;
        }
        a {
            color: #aaa;
            text-decoration: none;
        }
        a:hover {
            color:#fff;
        }
        #d1 {
            opacity: 0.8;
            font-size: 50px;
            padding-top: 300px;
            line-height: 80px;
            height: 500px;
            color: #fff;
            font-weight: normal;
            text-align: center;
            margin: 0px;
            background: url(/dm-da839ed25612b301/tutorials/style/KLUv_SA2sQEAaHR0cDovL2ltZy5pdGhvbWUuY29tL3J1YW5tZWkvd3d3L2ltYWdlcy9ydWFubWVpLm0uc3Zn) no-repeat center 130px;
            font-weight: lighter;
        }