sorting icons not showing on page?

I have implemented sorting on multi header row datatable. everything works fine but sorting icons are displaying on page. May be my css is overriding them. How to bring them on page?

. I want display Hand when mouseover on header
. entries dropdown on top left side
. search on top right side


http://i.stack.imgur.com/3R05m.png


http://i.stack.imgur.com/hUnr3.png