Hi dbrobst,
If I understand correctly, you want to add an actual box outline around the highlighted text, not just a highlighted background. If that is correct, you can add a border to the span tag:
https://www.w3schools.com/css/css_border.asp
So, your new code would look something like this:
Here’s my text in the HTML view and <span style=”background-color:yellow;border-style:outset;”>here is what I want to highlight</span> in that text.
I had a little issue with mine, so if you don’t see the border, try adding border-width to your CSS like this:
Here’s my text in the HTML view and <span style=”background-color:yellow;border-style:outset;border-width:4px”>here is what I want to highlight</span> in that text.
Adjust the border style, width and color as you like.
Hope this helps!