body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1em;
}

section {
    max-width: 600px;
    margin: 2em auto;
    padding: 1em;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

label {
    display: block;
    margin-bottom: 0.5em;
}

input,
textarea {
    width: 100%;
    padding: 0.5em;
    margin-bottom: 1em;
}

button {
    background-color: #333;
    color: #fff;
    padding: 0.5em 1em;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #555;
}