[data-lazy] {
    background-position: center;
    background-size    : cover;
    background-repeat  : no-repeat;
    display            : block;
    position           : relative;
}

[data-lazy]::before {
    content            : "";
    position           : absolute;
    inset              : 0;
    background-image   : url(preloader.svg);
    background-position: center;
    background-repeat  : no-repeat;
    background-color   : transparent;
    transition         : opacity 0.25s ease-in-out;
    pointer-events: none;
}

[data-lazy] * {
    z-index: 2;
}

[data-lazy].loaded::before {
    opacity: 0;
}