All our content is responsive, which adapts to the screen size where it is being viewed. This means the content will be different than what shows on a desktop just because there is not the same amount of space on a phone or tablet as on a desktop computer, so it is expected behavior.
Images usually go first, and text has the size changed to be smaller and fit better.
At this point, we do not have a way to edit content specifically for mobile because all screen sizes differ, meaning it'd be impossible to consider each one and make designs for each one.
Instead, you can play around with the design for desktop, and use the preview provided or check on your device.
The following article provides more insight: