I noticed that the font size is somewhat different when i compare it for earlier posts.
For example this one; the font is a little bit bigger:
compared to this post; here the font is smaller:
When i view the source code; i see that no font is defined or size directly related to the text
What i do notice is that from the second link; i see that something is written regarding font-size: 0.9em in the CSS (viewed the source with Firefox (F12) and inspected the ellement; i noticed this part.
I couldnt find this element written somewhere in the CSS for the first post.
I normally added the content by choosing add content -> blog ; from there is started.
Thanks again for looking!