Fix background position on Firefox Lite /whatsnew page (#7991) (#8012)
Fix background position on Firefox Lite /whatsnew page (#7991) (#8012)


sylvestre/bedrock,sgarrity/bedrock,MichaelKohler/bedrock,hoosteeno/bedrock,MichaelKohler/bedrock,hoosteeno/bedrock,alexgibson/bedrock,craigcook/bedrock,mozilla/bedrock,MichaelKohler/bedrock,mozilla/bedrock,craigcook/bedrock,mozilla/bedrock,MichaelKohler/bedrock,alexgibson/bedrock,alexgibson/bedrock,ericawright/bedrock,flodolo/bedrock,sylvestre/bedrock,pascalchevrel/bedrock,flodolo/bedrock,ericawright/bedrock,pascalchevrel/bedrock,sgarrity/bedrock,sylvestre/bedrock,sgarrity/bedrock,ericawright/bedrock,ericawright/bedrock,hoosteeno/bedrock,mozilla/bedrock,hoosteeno/bedrock,craigcook/bedrock,sylvestre/bedrock,flodolo/bedrock,flodolo/bedrock,craigcook/bedrock,sgarrity/bedrock,pascalchevrel/bedrock,alexgibson/bedrock,pascalchevrel/bedrock