style.css

body {
    font-family: Arial, sans-serif;
    background-color: #f4f7f6;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #2c3e50;
    text-align: center;
}

p {
    color: #7f8c8d;
    text-align: center;
}

.input-section {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
    color: #34495e;
}

input {
    width: 100%;
    padding: 10px;
    border: 1px solid #dcdcdc;
    border-radius: 4px;
    font-size: 16px;
}

button {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background-color: #2980b9;
}

.output-section {
    margin-top: 20px;
}

h2 {
    color: #2c3e50;
    font-size: 20px;
}

#output {
    background-color: #ecf0f1;
    padding: 15px;
    border-radius: 4px;
    color: #34495e;
}