Add default size for map-canvas
Add default size for map-canvas

jinutm/silveralms.com,rockkhuya/taydantay,gustavoguichard/neighborly,jinutm/silvfinal,jinutm/silvfinal,jinutm/silverprod,jinutm/silverpro,jinutm/silveralms.com,raksonibs/raimcrowd,jinutm/silverprod,jinutm/silverclass,raksonibs/raimcrowd,jinutm/silverpro,jinutm/silverme,jinutm/silvfinal,MicroPasts/micropasts-crowdfunding,gustavoguichard/neighborly,rockkhuya/taydantay,raksonibs/raimcrowd,jinutm/silverme,jinutm/silverclass,MicroPasts/micropasts-crowdfunding,gustavoguichard/neighborly,MicroPasts/micropasts-crowdfunding,jinutm/silveralms.com,rockkhuya/taydantay,jinutm/silverclass,jinutm/silverprod,jinutm/silverpro,raksonibs/raimcrowd,MicroPasts/micropasts-crowdfunding,jinutm/silverme