.cb{clear:both}.fl{float:left}.fr{float:right}.tar{text-align:right}.tac{text-align:center}.fwb{font-weight:bold}.bb{border:1px solid black}.bw{border:0px none}.bn{border:0px none}.bss{border-style:solid}.bsdo{border-style:dotted}.bsda{border-style:dashed}.trans75{}.trans50{}.trans25{}.db{display:block}.dn{display:none}.pb1{padding-bottom:1em}.pt1{padding-top:1em}.mb1{margin-bottom:1em}.mt1{margin-top:1em}