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

.header {
    background: #333;
    color: #fff;
    padding: 10px 0;
    text-align: center;
}

.header nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 15px;
}

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

main {
    padding: 20px;
}

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

form {
    background: #fff;
    padding: 20px;
    margin: 20px auto;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    max-width: 400px;
}

form label {
    display: block;
    margin-bottom: 10px;
}

form input[type="text"],
form input[type="email"],
form input[type="password"],
form input[type="date"],
form input[type="number"],
form select,
form textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

form button {
    padding: 10px 20px;
    background: #333;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

form button:hover {
    background: #555;
}

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

ul li {
    background: #fff;
    margin-bottom: 10px;
    padding: 10px;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
}