body {
        margin: 0;
        font-family: sans-serif;
    }

    .gallery {
        display: flex;
        justify-content: space-around;
        border: 2px solid black;
        padding: 10px;
        background: white;
    }

    .gallery img {
        width: 100px;
        height: 70px;
        cursor: pointer;
        border-radius: 4px;
    }

    .preview {
        display: flex;
        justify-content: center;
        margin-top: 10px;
    }

    .preview img {
        width: 600px;
        height: 350px;
        object-fit: cover;
        border: 1px solid black;
    }