font-size: xx-small;
font-size: x-small;
font-size: small;
font-size: lighter;
font-size: medium;
font-size: large;
font-size: x-large;
font-size: xx-large;
font-size: smaller;
font-size: larger;
font-size: 1.2em;
font-size: 15px;
font-size: 12pt;
font-size: 100%;
font-size: 110%;