#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 50px;
    background-color: rgba(0,0,0,1);
    z-index: 100;
    display: flex;
    align-items: center;
    padding: 0 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

.hamburger-button {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hamburger-button:hover {
    opacity: 0.8;
}