:root {
    --bubble-bg: #f8f8f8;
    --bubble-border-color: #ddd;
    --bubble-border: solid 1px var(--bubble-border-color);
}

.image-strip {
    display: flex;
    flex-direction: row;
    width: 100%;
    gap: 10px;
    position: relative;
    margin-bottom: 40px;
}

.image-strip img {
    flex: 1 1 0;
    min-width: 0;
}

.image-bubble {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    z-index: 10;
    background: var(--bubble-bg);
    border: var(--bubble-border);
    border-radius: 8px;
    padding: 8px;
    text-align: center;
}

.image-bubble::before,
.image-bubble::after {
    content: '';
    position: absolute;
    left: var(--arrow-x, 50%);
    transform: translateX(-50%);
    border: 10px solid transparent;
}

.image-bubble.above { bottom: calc(100% + 10px); }
.image-bubble.above::before {
    bottom: -21px;
    border-top-color: var(--bubble-border-color);
}
.image-bubble.above::after {
    bottom: -19px;
    border-top-color: var(--bubble-bg);
}

.image-bubble.below { top: calc(100% + 10px); }
.image-bubble.below::before {
    top: -21px;
    border-bottom-color: var(--bubble-border-color);
}
.image-bubble.below::after {
    top: -19px;
    border-bottom-color: var(--bubble-bg);
}

.image-bubble img {
    max-width: 100%;
    max-height: 50vh;
    object-fit: contain;
    border-radius: 4px;
}