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

nav {
    background-color: #333;
}

nav ul {
    list-style: none;
    display: flex;
    padding: 0;
    margin: 0;
}

nav li {
    margin: 0;
}

nav a {
    color: white;
    padding: 14px 20px;
    display: block;
    text-decoration: none;
}

nav a:hover {
    background-color: #575757;
}

.container {
    padding: 20px;
}

table {
    width: 50%;
    border-collapse: collapse;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
}

th {
    background-color: #f2f2f2;
}

button {
    padding: 10px 20px;
    margin-top: 10px;
}