I personally was never very satisfied with any of the html offerings I
could find through the software center or on a web search similar to
"linux html editor". Granted, I was in a bit of a rush when I was
doing my looking, but I gave each one a several hour evaluation.

For quick edits, I settled on using gedit (it will color-code tags)
and saving to the desktop. Launching from the desktop or terminal
will allow to preview the site in the browser of your choice.

For more involved edits, I currently use CoffeeCup in a Windows VM, as
I have used that software for years and am very comfortable with it.
The free version has basic html editing with various features and a
preview screen/tab. Paid has wysiwyg, but I have never used that.
Even Deamweaver's wysiwyg would send me to swearing with the way it
decides to handle various tags...