Why????????

   I wrote a post and posted it but when it turned up the last three paragraphs stubbornly remained in the smaller font size.  I did not write the latter half of the post in smaller font, the site just did that somehow and stubbornly refused to allow me to change it.  I even took the whole text off to a Word document, deleted the first post and reposted from the copy and pasted Word document where the entire post had the same font size.  Still turned up with the latter half in a smaller font I DID NOT ELECT TO USE
   Why????????????