Notizen zur Implementierung von “and”, “or” und Negation (not) in CSS.
and
<div class="class1 class2"></div>
div.class1.class2
or
// Beide gelten
<div class="class1"></div>
<div class="class2"></div>
div.class1,
div.class2
not
:not([id="foobar")
ref: