需要JavaScript帮助。下拉菜单问题

can you please run the snippet and see my issue. All I need is to fix arrows to work correct. Right now everything is good when clicking the same element to open and close the drop down. But if you try to open the drop down clicking on first element then click on second element the first drop down will close but arrow will remain how it was in open position.can you please run the snippet and see my issue