.scroll_top {
    width: 34px;
    height: 34px;
    position: fixed;
    display: none;
    font-size: 0;
    z-index: 9999;
    right: 10px;
    bottom: 32px;
    background: #df2a29;
    border-radius: 50%;
    text-decoration: none;
}

    .scroll_top:before {
        content: "\f062";
        font-family: "FontAwesome";
        font-size: 14px;
        color: #fff;
        text-align: center;
        width: 34px;
        height: 34px;
        line-height: 34px;
        display: block;
        text-decoration: none;
    }