]> Testing a bug in Mozilla

Testing a bug in Mozilla

We first check that the CSS :before pseudo-class alone works correctly. The following word should be BUG between brackets: []. (If the brackets are empty, the rest of the test is pointless.)

Now we check its interaction with MathML: the following paragraph should read I state that 2+2=4., without any occurrence of the word BUG.

I state that 2 + 2 = 4 .