.center { text-align: center }
.left { text-align: left }
.right { text-align: right }
.top { vertical-align: top }
.middle { vertical-align: middle }
.bottom { vertical-align: bottom }
.nowrap { white-space: nowrap }
.bold { font-weight: bold }
.italic { font-style: italic }
.clear { clear: both }
.clear-left { clear: left }
.clear-right { clear: right }
.underline { text-decoration: underline }
.strike { text-decoration: line-through }
.float-left { float: left }
.float-right { float: right }