body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background: slateblue;
}

h1 {
    text-align: center;
}

form {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #cccccc;
    border-radius: 10px;
    background-color: #f9f9f9;
}

.form-group {
    margin-bottom: 15px;
}

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

input[type="text"],
input[type="number"],
select {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
}

button {
    padding: 10px 20px;
    background-color: slateblue;
    color: white;
    border: none;
    cursor: pointer;
}

.results {
    max-width: 600px;
    margin: 20px auto;
    padding: 20px;
    border: 1px solid #cccccc;
    border-radius: 10px;
    background-color: #f9f9f9;
}

.results p {
    margin: 5px 0;
}