.eco-nav {
    display: flex;
    justify-content: space-around;
    align-items: center;
    background: linear-gradient(90deg, #000000, #001f36);
    height: 50px;
}

.eco-nav a {
    color: white;
    text-decoration: none;
    padding: 12px 16px;
    font-family: "Open Sans", sans-serif;
}

.eco-nav a:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Responsive: make the sub-header fit on smaller screens while keeping tabs centered */
@media (max-width: 900px) {
    .eco-nav {
        height: 44px;
    }
    .eco-nav a {
        font-size: 14px;
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .eco-nav {
        display: none;
    }
}