Module "Restaurant__Welcome to Steak House__"

I have opened this module just to look at it and when I have saved it again, its appearance has been broken on the home page.
When I change text in a module and save it, the module crashes on the home page.

Hi

Some joomla editors do not accept html5 and are removing unknown lines of code. Please use one that does or disable editor entirely and work in pure html. Here You will find original content of this module: https://www.gavick.com/documentation/jo ... steakhouse