What is a tifo banner?

Aston Villa have created different tifo banners for Champions League matches this season [Getty Images]Manchester United are the latest football club to choreograph a 'tifo' banner, before they face Lyon in their Europa League quarter-final second leg at Old Trafford on Thursday.Tifos are seen across European football stadiums as ways to build up the atmosphere and motivate teams before kick-off.BBC Sport's Ask Me Anything team looks at what a tifo banner is.What is tifo?'Tifo' means a flag or b