Yes, we do.
With Nosto you can customize the look and feel of all recommendation elements using the design templates in the Nosto admin by adjusting the Html and .css. Through freely customizable elements defined by you, we support responsive mobile user interfaces. Again, just like with mobile stores, design is something you define yourself through recommendation templates which gives you tools to create design to meet your demands.
From the design point of view, Nosto is completely invisible to the customer.
As a suggestion, in case your site uses responsive web-design, design is most likely more manageable by using the same .css that your site itself uses so that you don’t have to repeat the .css settings on each and every recommendation template. Yet, this is our preferred practice and not mandatory.