html {
    min-width: 1000px
}

body {
    min-width: 1000px;
    background-color: #f5f6f7
}

main {
    margin-bottom: 50px;
    padding-bottom: 0;
    margin-top: 160px
}

.rg-d-content {
    zoom: 1;
    width: 1188px;
    margin: 0 auto
}

.rg-d-content:after {
    display: block;
    clear: both;
    visibility: hidden;
    height: 0;
    overflow: hidden;
    content: "."
}

.rg-d-content h1 {
    color: #373d40;
    text-align: center;
    margin: 80px 0 40px;
    white-space: nowrap;
    font-size: 34px;
    font-weight: 400
}

.rg-d-content .item {
    float: left;
    width: 273px;
    border: 1px solid #f0f1f2;
    border-radius: 6px;
    background: #fff
}

.rg-d-content .item .top {
    height: 182px;
    background-size: 100% 100%;
    background-repeat: no-repeat;
    border-radius: 6px 6px 0 0
}

.rg-d-content .item .os-win {
    background-image: url(../images/download-windows.954dcf88.png)
}

.rg-d-content .item .os-mac {
    background-image: url(../images/download-macos.ea0fb2ff.png)
}

.rg-d-content .item .os-android {
    background-image: url(../images/download-andriod.3e95fc44.png)
}

.rg-d-content .item .os-ios {
    background-image: url(../images/download-ios.59e491ba.png)
}

.rg-d-content .item .mid h3 {
    font-size: 18px;
    color: #686868;
    margin: 36px 0 14px;
    text-align: center
}

.rg-d-content .item .mid p {
    text-align: center;
    font-size: 12px;
    color: #9b9b9b;
    white-space: nowrap;
    overflow: hidden;
    line-height: 1.5
}

.rg-d-content .item .bottom {
    width: 273px;
    text-align: center;
    height: 150px
}

.rg-d-content .item .bottom .download-btn {
    display: inline-block;
    zoom: 1;
    text-align: center;
    width: 144px;
    height: 45px;
    color: #fff;
    font-size: 16px;
    line-height: 45px;
    margin-bottom: 20px;
    margin-top: 40px;
    border-radius: 4px
}

.rg-d-content .item .bottom .btn-os-win {
    background-color: #f0a55c
}

.rg-d-content .item .bottom .btn-os-win:hover {
    background-color: #de8c33
}

.rg-d-content .item .bottom .btn-os-mac {
    background-color: #5092e1
}

.rg-d-content .item .bottom .btn-os-mac:hover {
    background-color: #3b80d4
}

.rg-d-content .item .bottom .btn-os-android {
    background-color: #4dc879
}

.rg-d-content .item .bottom .btn-os-android:hover {
    background-color: #24a957
}

.rg-d-content .item .bottom .btn-os-ios {
    background-color: #14cda8
}

.rg-d-content .item .bottom .btn-os-ios:hover {
    background-color: #07bd98
}

.rg-d-content .item-margin {
    margin-right: 30px
}

@media screen and (min-height: 1120px) {
    footer {
        position: fixed;
        bottom: 0
    }
}

@media (max-width: 1240px) {
    main {
        width: 1240px
    }
}