portrait and landscape

HI there !! I'm a beginner, in my project their are levels that have to play in portrait mode and some in landscape. How can i set each level in portrait and some in landscape?? depending the level design. i don't want to set every level in portrait or landscape i prefer mixed together thanks in advance�..

I'm pretty sure if you set "Orientation" to "Any" in the projects bar then the user can switch between landscape and portrait at will.

the problem is when i set to any in orientation their is white background outside of my background i did in photoshop, i can see outside bolder size ?.

You'll probably need to either change your background size or change the browser scaling method that you're using.