Template:Worldheader
From IdleOn MMO Wiki
How to use Example: {{Worldheader|world=BH}} <--- BH for Blunderhills, YYD for Yum Yum Desert, etc. ---> {{Worldheader|world=BH|collapsed=y}} <--- you can add 'collapsed=y' to make the header collapsed by default ---> Add </div></div> at the end of every collapsible section to close it.