How do I get rid of the split screen view on my iPad Pro which I have accidently set

I have something accidently so that my iPad Pro has a split screen view when in the landscape orientation viewing Safari pages. It also shows the start-up Apple icon on its side when I turn it on. I use an Apple keypad with it so need to use it in landscape not portrait orientation. I have tried the instructions to change Settings out of multitasking and also to try sweeping across the screen from L to R but nothing restores it to single screen view. How can I get the single screen view back with the iPad in landscape orientation?