css problem

Suddenly i can't define styles for elements within classes/ids. Like this:

.classname {
  background-color:#555;
}
.classname p {
  color:white;
}

The .classname styles apply, but the .classname p styles don't. I've tried this with a few different classes/elements and it never works. The fuck? did they change this and I just didn't get the memo?

>>2
>>3

Also saging on a board as slow as /prog/ is the most pointless thing ever.