Changing "a links" without changing navigation links

In your Child Theme or CSS Editor Plugin try this code:

#main a {
  text-decoration: underline;
}

#main a:hover {
  text-decoration: none;
}

*Note
If your theme has a custom CSS Editor in it, you can also paste the code in there.

Never edit core CSS files, they’ll be deleted when the theme is updated.

Awesome! Thanks!