How to apply large amount of content for home page without hurting user experience?

Please check the attached image below. I have very similar type of interface for home page.

Now I want to add another three subheading. I want to write 200 - 400 words long content under each subheading. (This is mainly for SEO purposes, but those contents would be really helpful for users also)

The problem what I face while adding those content using full width for the texts is, it seems like hard to read and look like ugly. I mean on top of the site it's cool, but because of too much content at the end of the site, it looks bad.

So how can I add that large amount of content for homepage without hurting user experience?