Margin or padding best practices

Hi,

Are there best practices for margin or padding settings in evolve. I am looking to have a generous amount of left and right space on either side of my content. This works ok, until I preview in tablet and phone portrait mode. In some views, there is far too much space on either side, it looks like a thin column of content in the middle of the screen. I am making sure that I am adjusting the padding and margin for tablet and phone in the settings. I am creating my own Article styles. Can evolve differentiate between landscape and portrait?

Many thanks
Dave