body {
    background-color: #dfdfdf;
    display: flex;
    justify-content: center;
    padding-top: 50px;
}

.container {
    background-color: white;
    border: 2px solid black;
    width: 600px;
    padding: 20px;
    box-shadow: 8px 8px 0px #888888;
}

nav ul {
    list-style-type: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 15px;
}

nav a {
    text-decoration: none;
    color: blue;
    font-weight: bold;
}

nav a:hover {
    background-color: yellow;
    color: black;
}

nav a.active {
    background-color: black;
    color: white;
    padding: 2px 5px;
}