.arial {
 font-family:Arial, Helvetica, sans-serif;
 font-size: 90%;
 }

.groesser {
font-family: Arial, Helvetica, sans-serif;
 font-size: 160%;
 font-weight: bold;
 }
 .titel_180 { font-size:180%; font-weight: bold; }
.titel_100 { font-size:100%; font-weight: bold; }
small { font-size:70%;}