:root {
            --header-total-height: 4vw; 
        }

html {
    overflow-y: scroll;
}

        body {
            margin: 0;
            font-family: 'Arimo', sans-serif;
            line-height: 1.6;
            background-color: #f7c707;
            padding-top: var(--header-total-height); 
        }

        /* --- Navigation Banner (Unchanged) --- */
        .navigation-banner { position: fixed; top: 0; left: 0; width: 100%; height: 2vw; padding: 1vw 0vw 2vw 1.4vw;; box-sizing: content-box; z-index: 10; display: flex; align-items: center; justify-content: space-between; background-color: #f7c707; }
        .nav-left, .nav-center, .nav-right { flex: 1; }
        .nav-left a { text-decoration: none; color: black; font-weight: bold; font-size: 1.5vw; margin-right: 2.80vw; }
        .nav-center { text-align: center; }
        .nav-logo { font-weight: bold; font-size: 1.8vw; color: black; text-decoration: none; }