body {
        background: #f3f3f3;
        color: #333;
    }
    
    .mb40 {
        margin-bottom: 40px;
    }
    
    .banner-text-cloud {
        font-size: 28px;
        position: absolute;
        left: 50%;
        top: 30%;
        color: white;
        margin-left: -210px;
    }
    
    .banner-text-cloud-en {
        margin-left: -346px;
    }
    
    .banner-text1-cloud {
        font-size: 18px;
        position: absolute;
        left: 50%;
        top: 54%;
        color: white;
        margin-left: -162px;
    }
    
    .banner-text1-cloud-en {
        margin-left: -338px;
    }
    
    .cloud-p1 {
        text-indent: 2em;
        line-height: 38px;
        font-size: 16px;
        margin: 30px auto;
        color: #666;
        text-shadow: 0 1px 1px #fff;
    }
    
    #second {
        background-color: cornflowerblue;
        background-image: url("../../img/demo.png");
        background-attachment: fixed;
        background-repeat: no-repeat;
        background-size: cover;
    }
    
    .cloud-main {
        color: white;
    }
    
    .cloud-main h3 {
        margin: 50px auto;
        text-align: center;
    }
    
    .cloud-main p {
        text-indent: 2em;
        line-height: 300%;
        font-size: 16px;
    }
    
    .cloud-main-en p {
        text-indent: 2em;
    }
    
    .cloud-main ul {
        padding-bottom: 50px;
        line-height: 48px;
        font-size: 16px;
    }
    
    .cloud-main ul span {
        color: #ffca31;
    }
    
    .cloud-footer h3 {
        margin: 50px auto;
        text-align: center;
    }
    
    .cloud-footer p {
        line-height: 300%;
        font-size: 16px;
        color: #666;
        text-shadow: 0 1px 1px #fff;
    }
    
    .center {
        text-align: center;
    }
    
    .mtm40 {
        margin: 40px auto;
    }
    
    .cloud-footer a {
        -webkit-transition: all 0.225s ease-in-out;
        -moz-transition: all 0.225s ease-in-out;
        -o-transition: all 0.225s ease-in-out;
        transition: all 0.5s ease-in-out;
        color: #fff;
        background: transparent;
        border: 1px solid #fff;
        font-size: 16px !important;
        line-height: 36px;
        padding: 10px 86px;
        height: 36px;
        outline: none;
        cursor: pointer;
        background-color: #ff6831;
        text-shadow: none;
    }
    
    .cloud-footer a:hover {
        color: #fff;
        background: #b60005;
        border-color: #fff;
        text-decoration: none;
    }
    
    .cloud-footer-en a {
        padding: 0;
        color: #176ba8;
        background-color: #f3f3f3;
        border: none;
    }
    
    .mtb40 {
        margin: 40px auto;
    }
    /* 适配  begin
------------------------------ */
    
    @media(min-width: 320px) and (max-width: 767px) {
        /* Mobile phone ============================================ */
        .mt-op {
            margin-top: -11px;
        }
        .banner-text-cloud {
            font-size: 14px;
            position: absolute;
            left: 50%;
            top: 3%;
            color: white;
            margin-left: -104px;
        }
        .banner-text-cloud-en {
            font-size: 12px;
            position: absolute;
            left: 50%;
            top: 8%;
            color: white;
            margin-left: -147px;
        }
        .banner-text1-cloud {
            font-size: 12px;
            position: absolute;
            left: 50%;
            top: 53%;
            color: white;
            margin-left: -108px;
        }
        .banner-text1-cloud-en {
            font-size: 12px;
            position: absolute;
            left: 50%;
            top: 48%;
            color: white;
            margin-left: -186px;
            text-align: center;
        }
        .cloud-p1 {
            line-height: 22px;
            font-size: 12px;
            margin: 10px auto;
        }
        .cloud-main h3 {
            margin: 20px auto;
            text-align: center;
            font-size: 15px;
        }
        .cloud-main p {
            line-height: 220%;
            font-size: 12px;
        }
        .cloud-main ul {
            padding-bottom: 20px;
            line-height: 28px;
            font-size: 12px;
        }
        .cloud-footer h3 {
            margin: 20px auto;
            text-align: center;
            font-size: 15px;
        }
        .cloud-footer p {
            line-height: 220%;
            font-size: 12px;
        }
        .mtb40 {
            margin: 20px auto;
        }
    }
    
    @media(min-width: 768px) and (max-width: 991px) {
        /* 平板pad ============================================ */
        .banner-text-cloud {
            font-size: 22px!important;
            margin-left: -165px;
        }
        .banner-text-cloud-en {
            font-size: 18px!important;
            margin-left: -221px;
        }
        .banner-text1-cloud {
            font-size: 16px;
            top: 60%;
            margin-left: -144px;
        }
        .banner-text1-cloud-en {
            font-size: 14px;
            top: 60%;
            margin-left: -257px;
        }
        .cloud-p1 {
            font-size: 14px;
        }
        .cloud-footer h3 {
            margin: 50px auto;
            text-align: center;
            font-size: 18px;
        }
        .nav-en>li>a {
            padding: 21px 16px 18px 16px !important;
        }
    }
    
    @media(min-width: 992px) and (max-width:1279px) {
        /* 17桌面小屏显示器 ============================================ */
        .nav-en>li>a {
            padding: 21px 16px 18px 16px !important;
        }
        .banner-text-cloud-en {
            font-size: 18px!important;
            margin-left: -221px;
        }
        .banner-text1-cloud-en {
            font-size: 14px;
            top: 60%;
            margin-left: -257px;
        }
    }
    
    @media (min-width:1280px) and (max-width:1439px) {
        /* 19寸的液晶显示器(普屏/正屏)：1280×1024 ============================================ */
    }
    
    @media (min-width:1440px) and (max-width:1599px) {
        /* 19寸液晶显示器(宽屏)：1440×900 ============================================ */
    }
    
    @media (min-width:1600px) and (max-width:1679px) {
        /* 20寸液晶显示器(宽屏)：1600×900 ============================================ */
    }
    
    @media (min-width:1680px) and (max-width:1919px) {
        /* 22寸液晶显示器(宽屏)：1680×1050 ============================================ */
    }
    
    @media (min-width:1920px) {
        /* 24寸液晶显示器(宽屏)：1920×1200 ============================================ */
    }