>actually they were moved into their own class so there can be a separation between aesthetic stuff and structural, as mod-sama said
They don't need to be literally different - just in separate files

i.e.

base.css

.thing {
display: table;
padding: 2em:
}

tehk00lness.css

.thing {
background-color: #f0e0d6;
color: #800000;
border: 1px solid #be8080
border-top: none;
border-left: none;
}