Presentational CSS Classes

These are the opposite of semantic markup, but I find them useful:

.align-both   { text-align: justify; }
.align-center { text-align: center; }
.align-left   { text-align: left; }
.align-right  { text-align: right; }
.float-left   { float: left; }
.float-right  { float: right; }
.nobr         { white-space: nowrap; }
.small        { font-size: 80%; } /* should really sync with the <small> tag rules */