Using Block Quotes

Each time I put a section of text into “block quotes”, update my post and then look at that post in a new page, I notice that the content which I put in block quotes is not only centered (which I want) but also that the font in the block quote is much larger than the font of the rest of my post. I really do not like this and want the size of the font in the block quote to remain the same as the rest of the font on the page. Does anyone know how to fix this issue? Is this the way block quotes are always supposed to look – with the word in block quote larger than the rest of the article?

Thanks!