1. Below you should see a square with a black border with some text inside it. No red should be visible at any time during this test.
  2. Click between the two colored markers (green and blue) and type “foobar bazquux”
  3. Test passes if the text you typed is displayed at the cursor position between the two markers and the lines of text wrap inside the black border.

This is some text content. It contains two colored markers: foobar bazquux .
Follow the instructions above to test CSS Regions and contentEditable