Meteor Creating A Scrollable Div

Hey guys new day new question ;) im trying to make a scrollable div should be no problem but it does not work ;( in the div i am outputting names of my database and when the space

Solution 1:

Ninja Pixel helped me to find the problem in the comment section and the problem was that the css was not updating then i changed the background color in the css and it got updated and the scrollbars appeared too thanks again ninjaPixel ;)