Mozilla: Wrong interpreting of em values
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I am working on adaptive site, and have made everything in em values. Despite that, I have differences between Chrome and Mozilla in interpreting em. Website is dev.morodeer.ru/stroymoidom , problem is with the metal bar with icons. On the width of about 670px everything in Chrome is great, but Mozilla cuts the right edge (as width of centered wrapper is set to 90%). Also, with same width of browsers, metal bar in mozilla is smaller, which leads me to a thought, that Mozilla counts smaller font-size. 

Thank you for possible responding. 