html {
    background-color: black;
}

body {
    margin: 0;
    padding: 0;
}

canvas {
    padding: 0;
    margin: auto;
    display: block;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    max-width: 100vw;
    max-height: 100vh;
}

@keyframes fadeOut {
    0% {
        opacity: 1;
    }

    100% {
        opacity: 0;
    }
}

@keyframes fadeIn {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

.fade-out-element {
    animation-name: fadeOut;
    animation-duration: 0.25s;
    animation-timing-function: ease-in-out;
    animation-fill-mode: forwards;
}

.fade-in-element {
    animation-name: fadeIn;
    animation-duration: 0.25s;
    animation-timing-function: ease-in-out;
    animation-fill-mode: forwards;
}