.modal {
    background: rgba(50, 50, 50, 0.8);
    position: absolute;
    z-index: 1000;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    font-size: 16px;
    line-height: 150%;
}

.modal.hidden {
    opacity: 0;
    pointer-events: none;
    transition: opacity 300ms ease;
}

.modal-item {
    background-color: white;
    position: relative;
    border-radius: var(--x1);
    padding: var(--x12);
    max-width: 600px;
    margin: 32px;
}

.modal-item.modal-item-wide {
    max-width: none;
    width: 900px;
}

.modal-item.modal-item-source {
    height: 504px;
    max-width: none;
    width: 704px;
}

.modal h1:first-child {
    margin-top: 0;
}