body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    color: #333;
}

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

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav ul li a {
    text-decoration: none;
    color: #4CAF50;
}

h2 {
    color: #4CAF50;
}

section {
    margin-bottom: 30px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

th {
    background-color: #4CAF50;
    color: white;
}

tr:nth-child(even) {
    background-color: #f2f2f2;
}

tr:hover {
    background-color: #ddd;
}

form {
    margin-top: 15px;
}

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

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
}

input[type="submit"] {
    background-color: #4CAF50;
    color: white;
    padding: 10px;
    border: none;
    cursor: pointer;
}

input[type="submit"]:hover {
    background-color: #45a049;
}

footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.8em;
}