#bootup-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #000;
    background-image: url("bootup.gif");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    z-index: 999999;
    opacity: 1;
    transition: opacity 1s ease-in-out;
}

#bootup-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}
