Post Meta Info
Display and customize the Post Meta information.
Post Settings are optional and you are free to leave them blank.
If you choose otherwise, you can manage their visiblity and format from the Blogger Dashboard.
Go to the Layout tab:

and edit the Blog Posts gadget.
Select the info elements you wish to show or hide on your website and click the "save" button in the bottom right.
Meta Info Styling
and select Advanced ⟶ Posts/Pages
to access the Post Meta Info font settings.
To reset the styling and revert to the default settings,
click the clear advanced changes link at the bottom of the page.
Each section of your website can be styled independently.
This rule also applies to the Post Page elements.