"questioning" of Pompeo this morning

Did Rubio?

For some reason (I suspect I must have hit the wrong key or combination of keys when I was fooling around with something else) now when I open postings on DU there is a blank space of about 10-15 lines between the end of the post and where the responses begin. It's certainly not a crucial error but it's fairly annoying and, with my more than limited expertise in PC's I have up to now been unable to correct it.

Any suggestions from a kind DU'er as to how to get rid of this and get back to normal? I'm working on a Dell notebook running Windows 10 and using Chrome as my browser. Any suggestions will be tremendously appreciated! Thanks in advance!!!