multiple pseudo classes
by sym3tri
HTML
<div class="a foo">foo</div>
<div class="a foo bar">foo</div>
CSS
.a.foo:active:not(.bar) {
background-color: #f00;
}
by sym3tri
<div class="a foo">foo</div>
<div class="a foo bar">foo</div>
.a.foo:active:not(.bar) {
background-color: #f00;
}