.viewer-container {
    --opacity-transition-duration: 250ms;
    width: 100%;
    display: flex;
    flex-direction: column;
    opacity: 1;
    transition: opacity var(--opacity-transition-duration);
}

.viewer-container:not(.show) {
    opacity: 0;
    display: none;
}

.viewer-container .viewer-header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem 0.5rem;
    background-color: rgba(0, 0, 0, 1);
    color: white;
}

.viewer-container .viewer-name {
    margin: 0;
    font-weight: bold;
    /* font-style: italic; */
}

.viewer-container .viewer-buttons {
    padding: 0;
    display: flex;
    justify-content: flex-end;
}

.viewer-container .viewer-buttons .button {
    background-color: inherit;
    border: none;
    color: white;
    border-radius: 1.1rem;
    padding: 0.35rem 0.6rem;
    transition: background-color 0.2s, color 0.2s;
}
.viewer-container .viewer-buttons .button:hover {
    background-color: rgb(75,75,75);
}
.viewer-container .viewer-buttons .button:active {
    background-color: rgb(50,50,50);
}

.viewer-container .viewer-content {
    flex-grow: 1;
}