The css below crashes safari.

This link demonstrates the effect Test.

This span demonstrates the effect.

Haven’t tested it on windows but as ie doesn’t do generated content I don’t expect it to have any effect.

  a:hover:after
        {
           content: 'test';
           position: absolute;
        }

    span:hover:after
    {
      content: attr(class);
      position: absolute;
      color:red
    }
  

Back to my browser bugs page