@media (max-width: 425px) {

    html,
    body {
        display: flex;
    }

    .wrapper {
        width: 100%;
    }

    .lg-header,
    .lg-main,
    .lg-footer {
        display: none;
    }



    .sm-header {
        width: 100%;
        height: 667px;
        /* background-image: url(img/truck-2591007_1920\ 1.png); */
        background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url(img/sm-header-bg.png);
        background-repeat: no-repeat;
        background-size: cover;
        background-position: center center;
        display: flex;
        flex-flow: column wrap;
    }

    .sm-main,
    .sm-footer {
        width: 100%;
        display: flex;
        flex-flow: column wrap;
        align-items: center;
    }
}