Test parsing of CSS escapes.

SUCCESS

Rules from the stylesheet:

#a { background-color: green; }
#b { background-color: green; }
#c { background-color: green; }
#d { }
#e { }
Expected result:

#a { background-color: green; }
#b { background-color: green; }
#c { background-color: green; }
#d { }
#e { }