.knopf {

color:#000099;background-color:#f8f8f8;font-family:verdana;font-size:11pt;text-align:center;border-top:2px solid #cfcfcf;border-left:2px solid #bababa;border-right: 2px solid #aaaaaa;border-bottom: 2px solid #909090;padding:0em 0.2em 0em 0.2em;line-height:1.6em;white-space:nowrap;vertical-align:bottom;font-weight: bold;

}