body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #f5f5f5;
    color: #222;
}

nav {
    padding: 15px 20px;
    background-color: #222;
}

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

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

main {
    max-width: 1000px;
    margin: 30px auto;
    padding: 20px;
    background-color: white;
}

h1 {
    text-align: center;
}

main p {
    line-height: 1.6;
}

main img {
    display: block;
    width: 100%;
    max-width: 900px;
    height: auto;
    margin: 25px auto 0;
}

form {
    max-width: 600px;
    margin: 25px auto 0;
}

form div {
    margin-bottom: 15px;
}

form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

form input {
    width: 100%;
    padding: 10px;
    box-sizing: border-box;
}

form button {
    padding: 10px 20px;
    cursor: pointer;
}