body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f2f2f2;
}

/* Header */
header {
    background: #333;
    color: white;
    padding: 10px;
    text-align: center;
}

nav a {
    color: white;
    margin: 0 10px;
    text-decoration: none;
}

nav a:hover {
    text-decoration: underline;
}

/* Content box */
.container {
    padding: 20px;
    background: white;
    margin: 20px auto;
    width: 80%;
}

/* Footer */
footer {
    text-align: center;
    padding: 10px;
    background: #333;
    color: white;
}

/* Form */
input, textarea {
    width: 100%;
    max-width: 400px;
    padding: 8px;
}

button {
    padding: 8px 12px;
    background: #333;
    color: white;
    border: none;
}