body {
    font-family: Arial, sans-serif;
    background-color: #333;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

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

#display {
    background-color: #222;
    border: 2px solid #555;
    margin-bottom: 20px;
}

.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

button {
    background-color: #444;
    border: none;
    color: white;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 18px;
}

button:hover {
    background-color: #666;
}