body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

#container {
    text-align: center;
}

#grid {
    display: grid;
    grid-template-columns: repeat(5, 50px);
    grid-template-rows: repeat(5, 50px);
    gap: 5px;
    margin: 20px 0;
    justify-content: center;
}

#grid div {
    width: 50px;
    height: 50px;
    border: 1px solid #ddd;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 14px;
}

/* Pastel colors */
.red {
    background-color: #FFAAAA; /* Pastel Red */
}

.blue {
    background-color: #A8D8FF; /* Pastel Blue */
}

.beige {
    background-color: #F1E1C6; /* Pastel Beige */
}

.black {
    background-color: #333333; /* Darker Pastel Black */
    color: white; /* White X for visibility */
}

button {
    font-size: 24px;
    cursor: pointer;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #45a049;
}