br.a{content:"" !important}
br.b:before{content:"" !important}
br.c:after{content:"" !important}

class-A is here,
 and class-B is here,
 and class-C is here.
 Maybe you can see the Opera's bug.
]]>

class-A is here,
and class-B is here,
and class-C is here.
Maybe you can see the Opera's bug.

1. Load this page as User Style Mode.
2. Change to Author Style Mode.
3. Change to User Style Mode again.