.histogram-container.histogram-activated .histogram-overlay-message {
    display: none;
}

.histogram-container:not(.histogram-activated) .histogram-content {
    filter: blur(15px);
    pointer-events: none;
}

.histogram-container .histogram-content {
    transition: filter .5s;
}

.histogram-container .histogram-content select {
    font-family: "Courier New", Courier, monospace;
    font-size: .8rem;
    text-overflow: ellipsis;
}

.histogram-overlay-message {
    position: absolute;
    z-index: 1;
    left: 0;
    right: 0;
    margin: 20px 25%;
    text-align: center;
}

.histogram-overlay-message-button-container {
    display: inline-block;
    margin: 0 5px 6px;
}

.histogram-overlay-message-button-container {
    display: inline-block;
    margin: 0 5px 6px;
}

.histogram-image-container-outer {
    /* Center child: https://stackoverflow.com/a/37126250 */
    overflow: hidden;
    display: flex;
    justify-content: center;
}

/* https://stackoverflow.com/a/21992458 */
.histogram-image-container {
    flex-shrink: 0;
    width: 108%;
    max-width: 800px;
    aspect-ratio: 1.77; /* 800/450 */
}

.histogram-image {
    display: block;
    margin: 0 auto;
}

.histogram-modal-guide-content p {
    margin-bottom: .5rem;
}

.histogram-modal-guide-content li {
    margin-bottom: 1rem;
}

.histogram-modal-guide-content h3 {
    margin-top: 2rem;
}