They have a few levels of interviews.

First was a phone interview where you answered general questions and a few knowledge questions.

Then there was a video chat interview with a member of one of the teams you are interviewing for, which focused more on technical aspects.

The developer interviewing me asked me to make changes to 3 previously set up JSFiddles while he watched and answered my questions. He wanted to hear my thought process and see what solutions I tried and what questions I asked.

He asked me to take a <ul> element that he gave me in a JSFiddle and change the CSS and behavior for several of the <li>'s.

He asked me to write a function that would print different strings depending on several conditions.