image-rendering fix in Firefox extracss
image-rendering fix in Firefox extracss

ByzantineFailure/BPM-for-Discord,ByzantineFailure/bpm,ByzantineFailure/BPM-for-Discord,ILikePizza555/BPM-for-Discord,ByzantineFailure/BPM-for-Discord,ILikePizza555/BPM-for-Discord,ByzantineFailure/bpm,Rothera/bpm,Rothera/bpm,ILikePizza555/BPM-for-Discord,Carson-Shook/bpm,ByzantineFailure/BPM-for-Discord,Ajedi32/bpm,Ajedi32/bpm,Rothera/bpm,Ajedi32/bpm,Carson-Shook/bpm,ILikePizza555/BPM-for-Discord,Carson-Shook/bpm,ByzantineFailure/bpm,ByzantineFailure/bpm