Link Highlight box plugin

Not sure what you mean, but could it be Fancy ToolTips?

When I mouse over a link in a post, I want the text to be encloses in a square highlight box.

Mouse over the links here: https://matthewbischoff.com/blog/

thanks.

ah… that’s simple CSS. All links will get that background when you write something like this in your stylesheet:
a:hover {
background-color: green;
}
you can replace green with any colour (words or the #-values, or rgb values)
Naturally you can write more stricter “rules” to get the backgrounds show up only in posts or whatever you like. For example if your posts are enclosed in a div titled “storycontent”, you could write
#storycontent a:hover {
background-color: green;
}

Thanks! Thats what I was looking for.

regards…

-paul.