body {
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #f0f8ff;
}

#game-board {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 20px;
}

#pattern-container, #user-input-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.pattern-cell {
    height: 100px;
    border: 2px solid #ccc;
    margin: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.user-input-cell {
    width: 100px;
    height: 100px;
    border: 2px solid #ccc;
    margin: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.pattern-cell img, .user-input-cell img {
    height: 100%;
    width: auto;
}

.user-input-cell.correct {
    background-color: #90ee90;
}

#character-selection-container {
    display: flex;
    flex-wrap: wrap;
    width: 400px;
    justify-content: center;
}

.character-image {
    width: 80px;
    height: 80px;
    margin: 5px;
    cursor: pointer;
    border: 3px solid transparent;
    border-radius: 5px;
}

.character-image.selected-char {
    border: 3px solid #007bff;
    box-shadow: 0 0 10px #007bff;
}

#difficulty-container {
    margin-bottom: 20px;
}

#difficulty-container button {
    font-size: 1.2em;
    padding: 10px 20px;
    margin: 0 10px;
    cursor: pointer;
    border-radius: 5px;
    border: 1px solid #ccc;
    background-color: #fff;
}

#congratulations-container {
    text-align: center;
}

.rainbow-text {
    font-size: 3em;
    font-weight: bold;
    background: linear-gradient(to right, #ff0000, #ff7f00, #ffff00, #00ff00, #0000ff, #4b0082, #8b00ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

#congratulations-images {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.congratulations-image {
    width: 80px;
    height: 80px;
    margin: 5px;
}