fixes 11925: cover template for firefox
fixes 11925: cover template for firefox

BS3 commits: 8142493b42935f70881f29ed67acf991029ebdcb

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