body {
    font-family: Arial, sans-serif;
    background: #f5f5f5;
    padding: 20px;
    text-align: center;
}

#container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px auto;
    max-width: 600px;
}

.box {
    width: 50px;
    height: 50px;
    background-color: black;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

input,button {
    padding: 10px;
    margin: 5px;
    font-size: 16px;
    border-radius: 10px;
}

button {
    cursor: pointer;
    background-color: #e4e4e4;
    border-radius: 10px;
}

button:hover {
    background-color: rgb(41, 41, 41);
    color: white;
    transition: 0.2s;
}
#controls {
    margin-bottom: 20px;
}