Is there a way to add a border around a headline and hero title font?

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Currently I'm trying to figure out if I can add an outline to the actual slider headline font (hero_title). I'd like the font to be no fill with a white border.

Is it also possible to add a black border no fill to the H1 text on the site?
I've been googling possible CSS, but am not having any luck with anything I try.

Is this possible? Or am I out of luck?  

The site for reference is