body {
    font-family: Arial, sans-serif;
    margin: 30px;
}

.container {
    width: 400px;
}

.large-image-box {
    width: 300px;
    height: 220px;
    border: 1px solid #ccc;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 15px;
    background-color: #fafafa;
}

.large-image-box img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.thumbnail-group {
    display: flex;
    gap: 15px;
    margin-bottom: 10px;
}

.thumbnail-group img.thumb {
    width: 70px;
    height: 50px;
    object-fit: cover;
    border: 1px solid #888;
    cursor: pointer;
}

.thumbnail-group img.thumb:hover {
    border-color: blue;
}

.instruction {
    font-size: 13px;
    color: #555;
}