body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #e6f7ff;
}

.container {
    text-align: center;
}

.board {
    display: grid;
    grid-template-columns: repeat(3, 100px);
    grid-template-rows: repeat(3, 100px);
    gap: 5px;
    margin: 20px auto;
}

.square {
    width: 100px;
    height: 100px;
    background-color: #4a90e2;
    color: white;
    font-size: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    border: 2px solid #ff6b6b;
    border-radius: 5px;
}

.square:hover {
    background-color: #50c878;
}

.message {
    margin-top: 20px;
    font-size: 1.2rem;
}