body {
    font-family: Arial, sans-serif;
    margin: 20px;
    padding: 20px;
    background-color: #f4f4f4;
    text-align: center;
}
form {
    display: inline-block;
    text-align: left;
    max-width: 400px;
    margin: auto;
}
label {
    font-weight: bold;
}
input, button {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    font-size: 16px;
}
button {
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
}
button:hover {
    background-color: #0056b3;
}
.result {
    margin-top: 20px;
    font-size: 18px;
    color: green;
    font-weight: bold;
}
.result {
    font-size: 18px;
    font-weight: bold;
}
.result.green {
    color: green;
}
.result.red {
    color: red;
}
.result.orange {
    color: orange;
}