Often I'll use Bootstrap on client projects to save some time, but I didn't include it on this site to minimize unneeded code.
I'm also using the NetlifyCMS for content management. Despite being comfortable with Wordpress, and having set up many Wordpress sites over the years, I enjoyed Netlify's easy configuration for creating new content types (aka, collections).
I set a standard when working on this site to keep track of the site's Lighthouse Score and try to maximize it. Which meant working through how use Gatsby to be more efficient. I would encourage you to check out the current score.