У вашего броузера проблема в совместимости с HTML5
After having our trampoline get blown out of the yard a few different times I came up with this anchor system. Using 3 yard anchors (with straps) and taking down the net, has kept this one in place through some heavy storms. I hope this helps someone out, it's kinda nice walking outside after a storm and our trampoline is right where it belongs.