How do I test CSS over many form factors?

Question

I only have a single monitor with a 1920x1080 resolution. Is there some tool that helps me see the outcome of my CSS changes instantly over multiple resolutions? I'm only starting to learn CSS, but constantly resizing my browser into all directions after every tiny modification of my CSS file seems cumbersome.

Answer 1

The Web developer toolbar has a built-in option to resize your window. Alternatively, you can also create bookmarklets to resize the window using the resizeTo function.