fortuna header settings

Hello-
I have this in fortuna heading settings, general tab in the text field.
“A <strong class=”text_rotate”>full-service;local;reliable technology partner”
This as worked for a year, all of a sudden this now makes the site crash in a “aw snap” message in chrome. When I take it out it works. Nothing has changed on the site
here is a draft page https://itasaservice.net/?page_id=24347&preview=true
any ideas?