.header ul {
    list-style-type: none;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: black;
    margin-bottom: 45px;
    font-weight: 400;
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 3;
}

.header ul a {
    color: white;
    display: block;
    text-decoration: none;
    padding: 10px 20px;
    font-size: 3rem;
}

.header ul a:hover {
    text-decoration: underline;
}

.header {
    margin: 0 auto;
}

.logo {
    width: 100%;
    max-width: 2000px;
    height: auto;
}

.logo-small {
    margin-top: 20px;
    width: 90%;
    max-width: 650px;
}

.img-container {
    position: relative;
    width: 100%;
    height: 100%;
}

@media (max-width: 480px) {
    .header ul a {
        font-size: 2.4rem;
    }
    .logo {
        width: 100%;  
        height: unset;
    }
}

@media (max-width: 280px) {
    .header ul a {
        font-size: 1.6rem;
    }
}