I've been using either Photoshop or Illustrator to design websites and then adjust the design when I develop. However I'm currently designing a site where I need to showcase the responsiveness of the design, what's the best tool to get the job done? I tried Adobe Reflow, but it doesn't let me use local fonts, then I tried Macaw, it's slightly buggy. I'm now considering just design in the browser and code as I go? Not sure that's the most efficient way or not. What do people use nowadays?