examples/ol2: Make sure the github banner is visible above the tiles
examples/ol2: Make sure the github banner is visible above the tiles

wsignor/wsignor.github.io,noerw/sidebar-v2,MuellerMatthew/sidebar-v2,andrewmartini/sidebar-v2,andrewmartini/sidebar-v2,noerw/sidebar-v2,projectbid7/sidebar-v2,wsignor/wsignor.github.io,Turbo87/sidebar-v2