html,body{
    padding:0;
    margin: 0;
    height: 100vh;
    width: 100%;
}
@media (max-width:1024px) {
    .container{
        background-image:url(../image/bg2.png);
        height: 100vh;
        width: 100%;
        background-repeat: no-repeat;
        background-size: 100% 100%;
    }
    .header{
        width: calc(100% - 40px);
        height: 80px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 20px;
        background-color: #fff;
    }
    .header_img{
        height: 40%;
    }
    .header_info{
        width:150px;
        height:50px;
        font-weight: bold;
        background: #E5E6E6;
        border-radius: 30px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 14px;
    }
    .mainContent{
        width: 100%;
        height: calc(100vh - 100px);
        padding-top: 10px;
    }
    .downpart{
        width: 100%;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        margin-bottom: 20px;
        height: 65%;
    }
    .icon{
        margin-bottom: 20px; 
    }
    .iconImg{
        width: 200px;
    }
    .downclick{
        font-weight: bold;
        font-size: 16px;
        margin-bottom: 20px;
    }
    .clickbtn{
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
    }
    .androidbtn{
        background: #000000;
        border-radius: 4px;
        width: 230px;
        height: 50px;
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        text-decoration:none;
        margin-bottom: 20px;
        font-size: 14px;
    }
    .android_img{
        height: 30px;
        margin-right: 3px;
    }
    .iosbtn{
        background: #000000;
        border-radius: 4px;
        width: 230px;
        height: 50px;
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        text-decoration:none;
        font-size: 14px;
    }
    .ios_img{
        height: 30px;
        margin-right: 3px;
    }
    .mobileImg{
        display: block;
        width: 100%;
        height: calc(35% - 20px);
        text-align: center;
    }
    .item_img{
        height: 100%;
    }
    
}
@media (min-width:1025px) {
    .container{
        background-image:url(https://fcar-oversea-public.oss-us-west-1.aliyuncs.com/public/images/Toptekk/bg.png);
        height: 100vh;
        width: 100%;
        background-repeat: no-repeat;
        background-size: 100% 100%;
    }
    .header{
        width: calc(100% - 20px);
        height: 100px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 10px;
        background-color: #fff;
    }
    .header_img{
        height: 50%;
    }
    .header_info{
        width:200px;
        height:50px;
        font-weight: bold;
        background: #E5E6E6;
        border-radius: 30px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .mainContent{
        position:relative;
        width: 100%;
        height: calc(100vh - 100px);
    }
    .downpart{
        width: 40%;
        position: absolute;
        left: 10%;
        top: 25%;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }
    .icon{
        margin-bottom: 20px;
    }
    .iconImg{
        width: 250px;
    }
    .downclick{
        font-weight: bold;
        font-size: 20px;
        margin-bottom: 20px;
    }
    .clickbtn{
        display: flex;
        align-items: ceneter;
        justify-content: space-between;
    }
    .androidbtn{
        background: #000000;
        border-radius: 4px;
        width: 230px;
        height: 50px;
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        text-decoration:none;
        margin-right: 20px;
        font-size: 14px;
    }
    .android_img{
        height: 30px;
        margin-right: 3px;
    }
    .iosbtn{
        background: #000000;
        border-radius: 4px;
        width: 230px;
        height: 50px;
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        text-decoration:none;
        font-size: 14px;
    }
    .ios_img{
        height: 30px;
        margin-right: 3px;
    }
    .mobileImg{
        display: none;
    }
}