.panel {
    position: sticky;
    z-index: 999;
    top: 0;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    color: var(--background-color);
    background-color: var(--text-color);
    opacity: 0.25;
}

@media screen and (min-width: 900px) {
    .panel {
        padding: 0.75rem 2rem;
    }
}

.panel:hover {
    opacity: 1;
}

.panel a:hover {
    opacity: 0.5;
}