#count2pre {
    display: block;
    width: 100%;
    position: relative;
    background: #000;
    background-image: url('https://cdnv2.tgdd.vn/mwg-static/common/Campaign/0e/45/0e45c6a0fd8ada7e8a4eb92de8325068.png');
    background-position: center top;
    background-repeat: no-repeat;
    height: 320px;
}

    #count2pre #clockgame {
        color: #FFF;
        gap: 8.5%;
        width: 1200px;
        margin: auto;
        top: 60%;
    }

.mobile-bg {
    display: none;
}

@media screen and (max-width: 640px) {
    section.wrapper {
        width: 100vw !important;
        min-width: 100vw !important;
        max-width: 100vw !important;
    }

    #count2pre {
        display: block;
        width: 100%;
        position: relative;
        background: #000;
        background-image: none;
        height: unset;
    }

        #count2pre .mobile-bg {
            display: block;
            width: 100%;
            height: auto;
        }

        #count2pre #clockgame {
            display: block;
            color: #FFF;
            width: 100%;
            margin: auto;
            top: 60%;
        }

            #count2pre #clockgame span {
                display: inline-block;
                width: 25%;
                font-size: 3em;
                text-align: center;
            }
}