header {
    top: 0px;
    left: 0px;
    width: 100vw;
    height: 80px;
    padding: 10px 50px;

    color: white;
    z-index: 990;
}

header.PC {
    background-color: black;
    opacity: 80%;
}
header.MO_TA {
    background-color: var(--bg-color-darken);
}