Select by label
p {font:10px;};
Multiple tab selection
h1,h2{font:10px;}
nested selection
ul li{font: 10px}
id selection
#id {font:10px;}
class selection
.className{font:10px;}
Label class selection
p.className{font:10px;}
p {font:10px;};
h1,h2{font:10px;}
ul li{font: 10px}
#id {font:10px;}
.className{font:10px;}
p.className{font:10px;}