.fl {float:left;}
.fr {float:right;}
.clear {clear:both;height:0;line-height:0;font-size:0;}
.absolute {position:absolute;}
.fixed {position:fixed;}
.relative {position:relative;}
.btn {cursor:pointer; border:none;}
.notext {text-indent:-99999px;font-size:0;line-height:0;}
.none {display:none;}
.block {display:block;}
.inline {display:inline;}
.iblock {display:inline-block;}
.valt {vertical-align:top;}
.valm {vertical-align:middle;}
.valb {vertical-align:bottom;}
.tar {text-align:right;}
.tal {text-align:left;}
.tac {text-align:center;}