These are styles that are applied to the page using the editor functionality vs being applied at the CSS level. To edit these you would click on the area you are hoping to style and change the alignment or spacing, background, etc. When you change it in the editor it will automatically apply those styles to the CSS referenced when the page is rendered, but it isn't applied to the CSS file itself.
Did this post help solve your problem? If so, please mark it as a solution.
Josh Curcio HubSpot support and inbound marketing for OEMs, contract manufacturers, and industrial suppliers. HubSpot Platinum Partner & HubSpot Certified Trainer