body {
    margin: 0;
    padding: 0;
    background-color: black;
}

#banner {
    height: 100px;
}

.nav {
    display: flex;
    justify-content: space-between;
}

.nav div {
    flex-grow: 1;
    height: 160px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.nav a {
    text-decoration: none;
    color: whitesmoke;
    font-size: 30px;
}

.top-img {
    margin: 100px auto;
    width: 250px;
}