@media (max-width: 750px) {
    html {
        min-width: 100%;
        font-size: 10vw;
    }
    body {
        min-width: inherit;
        overflow: hidden;
    }
    .download {
        top: 0;
        height: 100vh;
        align-items: center;
        width: 90%;
    }
    .download .download-left {
        width: 100%;
    }
    .download-right {
        display: none;
    }
    .download-mobile {
        display: block;
        width: 40%;
    }
    .download-mobile img {
        width: 100%;
    }
    .download-left .group {
        margin: .53rem 0;
    }
    .download-text .box-tip h4 {
        font-size: .26rem;
    }
    .download-text .box-tip h4 {
        font-size: .48rem;
    }
    .download .download-left h1 {
        font-size: 1rem;
    }
    .download .download-left h3 {
        font-size: .5rem;
    }
    .download .btn-img img {
        width: 100%;
        height: inherit;
    }
    .download-text .box-tip {
        margin-bottom: 0.4rem;
    }
    .download-text .box-tip p {
        width: 100%;
        font-size: .35rem;
        max-width: 248px;
    }
    .install_dow {
        width: 100%;
        height: calc(100% - 35px);
        top: auto;
    }
    .install_nav {
        width: 100%;
        margin: 0;
    }
    .install_box {
        position: absolute;
        top: 44px;
        display: flex;
        height: 100%;
        height: calc(100% - 44px);
        overflow: auto;
    }
    .install_con>li {
        width: 50%;
    }
}