.div-header {
    width: 1000px;
    max-width: 95%; /* para que nunca se salga de la pantalla */
    height: 80px;
    background: linear-gradient(135deg, #022252, #044f99);
    color: white;
    text-align: center;
    font-size: 32px;
    padding: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0 auto 4rem auto; /* centrado horizontal */
    border-radius: 12px;
    box-shadow: 0px 4px 15px rgba(0, 0, 0, 0.3);
    letter-spacing: 1px;
    text-transform: uppercase;
    box-sizing: border-box;
}

/* ===== Para tablets ===== */
@media (max-width: 1024px) {
    .div-header {
        height: 70px;
        font-size: 28px;
        padding: 18px;
        margin-bottom: 3rem;
    }
}

/* ===== Para teléfonos ===== */
@media (max-width: 600px) {
    .div-header {
        width: 90%;
        height: 60px;
        font-size: 20px;
        padding: 12px;
        margin-bottom: 2rem;
    }
}