body {
    font-family: 'Arial', sans-serif;
    margin: 20px;
    padding: 20px;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
}

h1 {
    text-align: center;
    color: #444;
    margin-bottom: 20px;
}

div {
    margin-bottom: 15px;
}

label {
    font-weight: bold;
    display: inline-block;
    margin-bottom: 5px;
}

input {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 16px;
}

button {
    display: block;
    width: 100%;
    background-color: #5cb85c;
    color: white;
    font-size: 16px;
    padding: 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
    margin-top: 10px;
}

button:hover {
    background-color: #4cae4c;
}

#result {
    font-weight: bold;
    color: #d9534f;
    margin-top: 15px;
    text-align: center;
}