Daily coronavirus architecture and design briefing: 21 April

Daily coronavirus briefing: today's architecture and design coronavirus briefing includes a medical isolation hood, Milan's post-coronavirus plans and rainbow art to raise spirits.
British artists create rainbow art to support the NHS
Damien Hirst has created Butterfly Rainbow for people to download, print and display in their windows to show support for the UK's National Health Service (NHS), while Quentin Blake has made rainbow-themed cards for people to send to loved ones during loc