body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f5f5f5;
}

header {
    width: 100%;
    background-color: #f5f5f5;
    text-align: center;
    padding: 30px 0px 30px;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1;
}

header img {
    position: absolute;
    left: 30px;
}

.game-container {
    text-align: center;
    margin-top: 120px; /* Adjust to create space below the fixed header */
}

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

.cell {
    width: 100px;
    height: 100px;
    background-color: #fff;
    border: 1px solid #000;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    cursor: pointer;
}

#message {
    font-size: 1.2rem;
    color: #333;
}

#restart {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 1rem;
}