/* 1. Paint the canvas immediately so it's never white */
html {
    background-color: var(--clr-bg); /* YOUR DARK HEX CODE HERE */
    /* Do NOT set opacity here */
}

/* 2. Hide the content, not the background */
body {
    opacity: 0;
    /*
    visibility: hidden;
    */
    transition: opacity 0.2s ease-in;
}

/* 3. The class JS will add to reveal content */
body.wf-active {
    opacity: 1;
    visibility: visible;
}