From looking at your image I can tell that you have used your own custom CSS to style the story.
The default CSS of Harlowe does not add a border to hyperlinks (markup or macro based), so either your own custom CSS is doing it or the web-browser it-self is doing it. (like some browsers do if you right click on a hyperlink)
What action causes the border to appear? (active,hover,right-click, etc..)
Which web-browser are you using when you see it?
Are you using a mobile device when you see it?
Could you supply a copy of your custom CSS for someone to look at to determine if it is adding the border?
Comments
The default CSS of Harlowe does not add a border to hyperlinks (markup or macro based), so either your own custom CSS is doing it or the web-browser it-self is doing it. (like some browsers do if you right click on a hyperlink)
What action causes the border to appear? (active,hover,right-click, etc..)
Which web-browser are you using when you see it?
Are you using a mobile device when you see it?
Could you supply a copy of your custom CSS for someone to look at to determine if it is adding the border?
The browser I'm using is Chrome.
My CSS is really simple and I have not added or removed anything which I can see is related to borders