body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

header {
    background: #4CAF50;
    color: white;
    padding: 10px 0;
    text-align: center;
}

nav ul {
    list-style-type: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 10px;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

main {
    padding: 20px;
}

section {
    margin-bottom: 20px;
}

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 10px 0;
    position: fixed;
    width: 100%;
    bottom: 0;
}

form {
    max-width: 400px;
    margin: 0 auto;
}

label {
    display: block;
    margin: 10px 0 5px;
}

input, textarea {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
}

button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 10px;
    cursor: pointer;
}