Drop down list and navigation menu

Hello Masters,

Am new to Meteor could you please help on the below problem.

On the webpage or html file page. I have a button and it has a check-box drop-down list so, if I check-mark the check box option and the field get selected to the navigation menu/row but if you unchecked the option its gets removed from the navigation menu. However, the LIST of drop-down items remains open that’s fine.

The problem is if you click on the label or title the option get selected/deselected but the LIST of drop-down items remains CLOSED.

I want to LIST of fields options to be open not closed could somebody suggest how to solve and achieve this.

Thank in advance