* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow: hidden; /* removes vertical + horizontal scroll */
}

/* Images */
.desktop-image,
.mobile-image {
    width: 100%;
}

.desktop-image img,
.mobile-image img {
    width: 100%;
    height: 100vh;
    display: block;
}

/* Default: Mobile & Tablet */
.desktop-image {
    display: none;
}

.mobile-image {
    display: block;
}

/* Desktop */
@media (min-width: 1024px) {
    .desktop-image {
        display: block;
    }

    .mobile-image {
        display: none;
    }
}