body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin-top: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    flex-direction: column; /* Stack elements vertically */
    gap: 5px; /* Add spacing between elements */
}

h1 {
    margin-top: 0px; /* Reduced top margin */
}

#start-button {
    padding: 10px 20px;
    font-size: 16px;
    margin-top: 20px;
    cursor: pointer;
}

#display-area {
    width: 350px; /* Fixed width */
    height: 120px; /* Fixed height */
    font-size: 36px; /* Increased font size */
    margin-top: 10px;
    padding: 20px; /* Added padding for the box */
    background-color: #f0f0f0; /* Light gray background color */
    border: 2px solid #ccc; /* Border for the box */
    border-radius: 10px; /* Rounded corners */
    display: inline-block; /* Ensures the box wraps content neatly */
    max-width: 300px; /* Prevents the box from expanding beyond 300px */
    margin: 0 auto; /* Centers the box horizontally */
    /* letter-spacing: 3px; Adds gaps between the digits */
}

#display-area:empty {
    visibility: hidden;
}

/* Responsive styles for mobile */
@media (max-width: 600px) {
    body {
        margin-top: 20px;
        font-size: 14px;
    }

    #start-button {
        padding: 15px 25px;
        font-size: 18px;
    }

    #display-area {
        font-size: 20px;
        margin-top: 10px;
    }
}