I’m a developer, not a designer. But my customers expect the web applications, online platforms, websites and administrative panels I build for them to look at least ‘fine’. For big projects I usually work together with real designers, but in smaller projects there isn’t always a design budget. Still our applications should look nice and our customers should be happy to work with them. In this post, I will describe the design guidelines I use for the most important aspects of a layout: grid, fonts, margins and colors. Then I will apply them to an app that was recently developed by my colleague.