I want to add a site-wide image on external links that show that the link is external.
Like in this answer: https://ux.stackexchange.com/a/2502/41541
I can do this by editing the CSS somehow, but what would be the best strategy for getting an image on my SharePoint and editing the CSS to do this?
When I inspected an internal link on the page and an external link, I found they have no
class set, so I'm not sure how I'd find external links with CSS.