.navfun a {
    text-decoration: none;
    display: inline-block;
    padding: 8px 16px;
}

.navfun a:hover {
    background-color: #ddd;
    color: black;
}

.navprevious {
    background-color: #f1f1f1;
    color: black;
}

.navnext {
    background-color: #04AA6D;
    color: white;
}

.navround {
    border-radius: 50%;
}