The layout of the sections mosaic is a highly customizable feature the Marfeel solution offers to provide publishers with a unique product and promote brand recognition. 

When articles appear in the sections mosaic, they're rendered with a layout. Marfeel has over 60 layouts combined for the publisher to choose from for tablet and smartphone.

In the themes Marfeel provides, they package a set of layouts for the sections mosaic and a set of CSS styles for the content elements. With a wealth of experience and insight in the mobile ecosystem, Marfeel knows which layouts work better in terms of performance. 

Of course, if a publisher has a certain idea for a layout, Marfeel can always develop this for them during the implementation process of their Marfeel solution.