mahjong_tile_picker.css

.mahjong-tile-picker-preview {
    cursor: pointer;
}

.mahjong-tile {
    cursor: pointer;
}

.mahjong-tile:hover {
    opacity: 0.9;
}

.mahjong-tile-picker-lightbox {
    display: none;
    opacity: 0;
    
    width: 500px;
    height: 300px;

    position: absolute;
    top:0;
    bottom: 0;
    left: 0;
    right: 0;

    margin: auto;
}

.mahjong-tile-picker-lightbox-background {
    display: none;
    
    background-color: black;
    opacity: 0;

    position: absolute;
    top:0;
    bottom: 0;
    left: 0;
    right: 0;

    margin: auto;
}