Add visual test for #18365
Add visual test for #18365

See also https://bugzilla.mozilla.org/show_bug.cgi?id=1228802

supergibbs/bootstrap,janseliger/bootstrap,blockstack/blockstack-bootstrap,twbs/bootstrap,bardiharborow/bootstrap,wesamco/bootstrap-rtl,TheFridayInstitute/bootstrap,vitaligent/4,wesamco/bootstrap-rtl,janseliger/bootstrap,zalog/bootstrap,creativewebjp/bootstrap,kvlsrg/bootstrap,seanwu99/bootstrap,SweetProcess/bootstrap,blockstack/blockstack-bootstrap,lipis/bootstrap,igoynawamreh/bootstrap,abvalentine/bootstrap,Hemphill/bootstrap-docs,slavanga/bootstrap,andresgalante/bootstrap,stanwmusic/bootstrap,david-schopf/bootstrap,afuno/bootstrap,wesamco/bootstrap-rtl,slavanga/bootstrap,gijsbotje/bootstrap,jipexu/bootstrap,xt0rted/bootstrap,kvlsrg/bootstrap,Delagen/bootstrap,yuyokk/bootstrap,NCARB/bootstrap,realcrowd/bootstrap,xt0rted/bootstrap,TheFridayInstitute/bootstrap,lipis/bootstrap,copperdesign/bootstrap,fschumann1211/bootstrap,janseliger/bootstrap,vitaligent/4,andresgalante/bootstrap,JumpLinkNetwork/bootstrap-backward,realcrowd/bootstrap,lipis/bootstrap,9-chirno/chirno,twbs/bootstrap,Delagen/bootstrap,tjkohli/bootstrap,vsn4ik/bootstrap,stanwmusic/bootstrap,frostbitten/bootstrap,tagliala/bootstrap,n054/bootstrap,Hemphill/bootstrap-docs,inway/bootstrap,m5o/bootstrap,supergibbs/bootstrap,frostbitten/bootstrap,9-chirno/chirno,johnajacob/bootstrap,coliff/bootstrap,SweetProcess/bootstrap,tibo66/bootstrap,tomlutzenberger/bootstrap,janseliger/bootstrap,GerHobbelt/bootstrap,kvlsrg/bootstrap,sealocal/bootstrap,realcrowd/bootstrap,gijsbotje/bootstrap,sealocal/bootstrap,IdanCo/bootstrap,Lyricalz/bootstrap,coliff/bootstrap,seanwu99/bootstrap,peterblazejewicz/bootstrap,seanwu99/bootstrap,afuno/bootstrap,peterblazejewicz/bootstrap,n054/bootstrap,Delagen/bootstrap,tjkohli/bootstrap,xt0rted/bootstrap,Scoutski/bootstrap,frostbitten/bootstrap,n054/bootstrap,abvalentine/bootstrap,Lyricalz/bootstrap,gijsbotje/bootstrap,lemuelbarango/bootstrap,hebbet/bootstrap,9-chirno/chirno,hebbet/bootstrap,afuno/bootstrap,nice-fungal/bootstrap,davethegr8/bootstrap,david-schopf/bootstrap,Lyricalz/bootstrap,davethegr8/bootstrap,supergibbs/bootstrap,bootstrapbrasil/bootstrap,slavanga/bootstrap,tagliala/bootstrap,edanbarak/bootstrap,frostbitten/bootstrap,joblocal/bootstrap,joblocal/bootstrap,9-chirno/chirno,creativewebjp/bootstrap,lemuelbarango/bootstrap,igoynawamreh/bootstrap,IdanCo/bootstrap,joblocal/bootstrap,Lyricalz/bootstrap,TheFridayInstitute/bootstrap,stanwmusic/bootstrap,tibo66/bootstrap,onenameio/rhythm-bootstrap,andresgalante/bootstrap,lemuelbarango/bootstrap,TheFridayInstitute/bootstrap,fschumann1211/bootstrap,lemuelbarango/bootstrap,peterblazejewicz/bootstrap,fschumann1211/bootstrap,vitaligent/4,SweetProcess/bootstrap,onenameio/rhythm-bootstrap,seanwu99/bootstrap,sealocal/bootstrap,hebbet/bootstrap,david-schopf/bootstrap,Hemphill/bootstrap-docs,sealocal/bootstrap,yuyokk/bootstrap,hebbet/bootstrap,blockstack/blockstack-bootstrap,vsn4ik/bootstrap,tomlutzenberger/bootstrap,lipis/bootstrap,tibo66/bootstrap,Delagen/bootstrap,igoynawamreh/bootstrap,NCARB/bootstrap,edanbarak/bootstrap,jipexu/bootstrap,abvalentine/bootstrap,inway/bootstrap,yuyokk/bootstrap,tomlutzenberger/bootstrap,onenameio/rhythm-bootstrap,fschumann1211/bootstrap,GerHobbelt/bootstrap,Scoutski/bootstrap,davethegr8/bootstrap,Hightrack/bootstrap,johnajacob/bootstrap,davethegr8/bootstrap,nice-fungal/bootstrap,zalog/bootstrap,joblocal/bootstrap,wesamco/bootstrap-rtl,johnajacob/bootstrap,JumpLinkNetwork/bootstrap-backward,vsn4ik/bootstrap,edanbarak/bootstrap,stanwmusic/bootstrap,vsn4ik/bootstrap,tagliala/bootstrap,igoynawamreh/bootstrap,zalog/bootstrap,bootstrapbrasil/bootstrap,edanbarak/bootstrap,jipexu/bootstrap,copperdesign/bootstrap,creativewebjp/bootstrap,IdanCo/bootstrap,slavanga/bootstrap,supergibbs/bootstrap,m5o/bootstrap,afuno/bootstrap,bardiharborow/bootstrap,andresgalante/bootstrap,tibo66/bootstrap,IdanCo/bootstrap,JumpLinkNetwork/bootstrap-backward,NCARB/bootstrap,copperdesign/bootstrap,yuyokk/bootstrap,SweetProcess/bootstrap,bootstrapbrasil/bootstrap,GerHobbelt/bootstrap,nice-fungal/bootstrap,realcrowd/bootstrap,copperdesign/bootstrap,Scoutski/bootstrap,Hemphill/bootstrap-docs,inway/bootstrap,gijsbotje/bootstrap,bardiharborow/bootstrap,Scoutski/bootstrap,xt0rted/bootstrap,NCARB/bootstrap,n054/bootstrap,johnajacob/bootstrap,Hightrack/bootstrap,bardiharborow/bootstrap,abvalentine/bootstrap,Hightrack/bootstrap,JumpLinkNetwork/bootstrap-backward,creativewebjp/bootstrap,jipexu/bootstrap