Footers and Headers Are Unwieldy.

[CrossReach]

Hi,

The footers and headers I find are unwieldy. When I click into one for example the text itself switches around. Once I click back out it goes back to normal. Sometimes different section headers are bigger than others. This affects the overall look of the document and leaves large white gaps one some pages, because the footer is so large and I don't know how to fix it. Any help is much appreciated. Thank you.