.footer1 {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
    // height: 120px;
    flex-direction: column;
    display: flex;
    align-items: center;
    padding-top: 46px;
    padding-bottom: constant(safe-area-inset-bottom);
    /* 兼容 iOS < 11.2 */
    padding-bottom: env(safe-area-inset-bottom);
    /* 兼容 iOS >= 11.2 */
    // background: linear-gradient(180deg, rgba(0, 0, 0, 0.00) 0%, #000000 100%);
    // background: linear-gradient(180deg, red, blue);
}