spacing between groups

Thanks to all for reply but it is not reducing the space between two groups. In the above image, I have shown the space with vertical rectangle which I want to remove.

Hi,
Hope the below link helps u

http://www.w3schools.com/cssref/pr_text_word-spacing.asp




Please mark this answer as accepted answer if it resolves your problem.

I want to reduce spacing between group headers to show groups close to each other. When I set margin-left:0px to win-groupheader it shows half data of first group. I am doing project using javascript, html5, css only.