body, html {
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    background-color: #f4f4f4;
    text-align: center;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}

.input-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    align-items: start;
}

input[type="number"], select {
    width: calc(100% - 20px); /* Adjust width to account for padding, ensuring elements do not stretch too wide on large screens */
    padding: 12px 10px;
    margin-top: 8px;
    border-radius: 5px;
    border: 1px solid #ccc;
    font-size: 16px;
    box-sizing: border-box;
}

label {
    font-size: 16px;
    margin-bottom: 8px;
}

button {
    background-color: #007bff;
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 18px;
    width: 100%; /* Full width for easier tapping on mobile, but will limit width on larger screens */
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    transition: background-color 0.3s;
}

button:hover {
    background-color: #0056b3;
}

/* Adjustments for larger screens */
@media (min-width: 600px) {
    .container {
        max-width: 600px; /* Limits the maximum width to ensure content doesn't stretch too far on larger screens */
        padding: 30px;
    }

    input[type="number"], select, button {
        font-size: 18px; /* Slightly larger font for readability */
        width: auto; /* Allows natural width based on content, preventing overly wide buttons/inputs */
    }

    .input-group {
        align-items: center; /* Center align for a more structured layout on larger screens */
    }
}