OK, I know I’m missing something very elementary here but I can’t seem to find the answer anywhere. When I use the visual editor and select say, 4 words of a 50 word post and want to apply the “Header 1” formatting (or any other that affects font size for that matter), it is applied to the entire post. I can apply it to just a few words. I am not importing text and am writing it from scratch into the editor. This is consistently a problem on multiple sites for me so I know it must be me that isn’t understanding something. Can someone please tell me what I’m missing?