.small {  font-size: 12px; line-height: 15px}
.regular {  font-size: 12px; line-height: 18px}
.mini { font-size: 10px; line-height: 12px}
.big {  font-size: 14px; line-height: 18px}
.theme {  font-size: 18px; line-height: 36px}