@media (max-width: 768px) {
    /* Make the header menu items stack vertically */
    .site-header .main-navigation {
        display: block;
    }

    /* Ensure the menu items are centered and not cut off */
    .site-header .main-navigation ul {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 0;
        margin: 0;
    }

    /* Adjust menu item styling */
    .site-header .main-navigation ul li {
        width: 100%;
        text-align: center;
        margin: 0;
    }

    /* Make sure links take up full width */
    .site-header .main-navigation ul li a {
        display: block;
        padding: 10px;
        width: 100%;
        box-sizing: border-box;
    }
}