How do I get rid of lots of static HTML files from my project?

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HTML5

website

Hi! I'm working on a static website. I'm working with just the static html with sass along with the webpack 5.

There're various html components that are common among the html pages and I have to copy those things over everytime I change something on a component for example the header of the website.

Html files are growing now and it's getting difficult and time consuming to just ctrl + c and ctrl + v. I know this is the most stupid way of doing this thing. I just need a better workflow solution.

The future scope of the website is static only but I know more html files will join the project and that's gonna haunt me along the way.

Can you suggest something for my usecase?

What I have tried:

I know a bit about templating engines for html but I'm not sure what to use and how I'm gonna add it to my workflow as everthing is static.