* {
    box-sizing: border-box;
}

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

/* Logo in the top left */
.logo {
    position: absolute;
    top: 10px;
    left: 10px;
}

.game-container {
    text-align: center;
}

.board {
    display: grid;
    grid-template-columns: repeat(3, 100px);
    grid-gap: 10px;
    margin-top: 20px;
}

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

.cell.x {
    color: #3498db;
}

.cell.o {
    color: #e74c3c;
}

button, select {
    margin-top: 20px;
    padding: 10px;
    font-size: 16px;
}