body {
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 50px auto;
}

.container {
    width: 90%; /* Adjust container width for mobile devices */
    max-width: 400px; /* Set a maximum width to avoid stretching on larger screens */
    margin: auto;
    border: 1px solid #ccc;
    padding: 20px;
}

h1 {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
}

input {
    width: 100%;
    padding: 8px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    background-color: #4CAF50;
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

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

.result {
    margin-top: 20px;
}

/* Media query for mobile devices */
@media screen and (max-width: 480px) {
    .container {
        padding: 10px;
    }

    h1 {
        font-size: 24px;
    }

    label, input {
        font-size: 14px;
    }

    button {
        padding: 8px 12px;
        font-size: 14px;
    }
}