Hi,
I was wondering it if is possible to have make my site leaner by turning all my sections into classes.
To understand what I mean please see this image as an example:

When I did a right click inspect there code appeared very lean and seem to have their sections are defined by classes.
Is this something that I can do?
My code when I right click inspect is heavy and I would love to make that leaner if possible.

What are your thought on me doing something like this to my sites?
Thank you!