.rainbow-container {
    display: none;
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    padding: clamp(0.75rem, 2vw, 2rem);
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.rainbow-container.is-visible {
    display: flex;
}