:root {
    --header-height: 80px;
    --nav-width: 68px;
    --first-color: #333; /* Updated background color to dark gray */
    --first-color-light: #AFA5D9;
    --white-color: #F7F6FB;
    --body-font: 'Nunito', sans-serif;
    --normal-font-size: 1rem;
    --z-fixed: 100;
}

.show {
    left: 0;
}

.active {
    color: var(--white-color);
}

    .active::before {
        content: '';
        position: absolute;
        left: 0;
        width: 2px;
        height: 32px;
        background-color: var(--white-color);
    }

@media screen and (min-width: 768px) {
    .show {
        width: calc(var(--nav-width) + 156px);
    }
}