extract .label-variant mix-in
extract .label-variant mix-in

BS3 commit 906d04a4aad5feec3c1fc8e376712046dc6abacd

2947721120/todc-bootstrap,todc/todc-bootstrap,aaroncnhk/todc-bootstrap,mozillo/todc-bootstrap,todc/todc-bootstrap,ztx1491/todc-bootstrap,todc/todc-bootstrap,2947721120/googlebt4,up2vs/todc-bootstrap