Urgent : Wordpress Editting

Hi there,

Using the divi theme. I have a problem regarding responsive design.

So we currently have 2 header sections. One for mobile, one for desktop. The desktop version uses a video background which is fine - It autoplays. This section is hidden from mobile viewers.

The other section displays on mobiles and tablets. This is not an autoplay background, but a video player feature. This is also fine. It is hidden on the desktop.

The problem : When you use a tablet and put it in landscape, it shows the desktop version. Because it is a mobile device, is does not autoplay and we're left with an empty space. We need this to display the mobile version.

This project is absolutely urgent and needs to be working within about 30-40 minutes of the job being accepted. The time frame is not at all negotiable due to outside circumstances.