.site-header {
    display: none;
    height: 5rem;
    background-color: #1e1e1e;
    width: 100%;
    position: fixed;
    top: 0;
    align-items: center;
    padding: 0 1rem;
    z-index: 998;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.site-header h1 {
    font-size: 1.2rem;
    margin: 0;
    color: white;
}

@media screen and (max-width: 768px) {
    .site-header {
        display: flex;
    }
}