body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

header {
    width: 100%;
    background-color: #333;
    color: #fff;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

header h1 {
    margin: 0;
}

header p {
    margin: 5px 0 20px;
}

nav {
    background-color: #333;
    padding: 10px 20px;
}

nav a {
    color: #fff;
    text-decoration: none;
}

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

nav a:visited {
    color: #fff;
}


main {
    margin-top: 20px;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 80%;
    max-width: 800px;
    text-align: center;
}

form {
    display: flex;
    flex-direction: column;
    align-items: center;
}

label {
    margin: 10px 0 5px;
}

input {
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 4px;
    width: 100%;
    max-width: 400px;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    background-color: #28a745;
    color: #fff;
    cursor: pointer;
}

button:hover {
    background-color: #218838;
}