Kimberley

register a custom background admin option.. new to wordpress since 3.o.... throw it in functions.php

Ha! I spent off and on all day on it.. .. If I were you, go to the wordpress twentythirteen repository and download all three of the js files... each...

Yeah, well before Milo did the update, I already attempted what just attempted hours ago with the most recent update..... I used js files from wordpress twentythirteen repository and it...

I'm also looking deeper into javascript.topbar file... I did notice that four months ago the topbar file elaborated deeper into sticky class.. now it does not...

I think the iPad is the medium breakpoint

I haven't tried using the wordpress js files since reverie's most recent update, It is worth a try though... I'm also using the wordpress custom header image as a reference...

an alternative ... find .top-bar.expanded in css and change the transparent to hsla(0, 0%, 0%, 1)

Check your CSS media queries Then check the function that may exist that denies site width... Keep that around 960 or 940 Then check the classes most likely similar so...