Forgive my ignorance since this seems like its something I should know by now.
I know I could make a stylesheet that will allow me to make changes in my CSS throughout several pages that use the CSS. I also know that you can make an external javascript file that could contain functions you want to reuse. But lets say I had pure HTML content (lets pretend a bunch of buttons or links) that I wanted replicated on several pages. Is there anything similar to a stylesheet in that regard? This would allow you to update the buttons/links all at once.