.class      { font-size: 12px; line-height: 15px; font-family: sans-serif }
.class1   { font-weight: bold; font-size: 16px; line-height: 16px; font-family: sans-serif; letter-spacing: 2px }
.class2  { font-size: 9px; line-height: 11px; font-family: sans-serif }