Currently I need to get into the node by clicking on the node name. How can I make the whole blank area clickable so I can also go to the node by clicking the blank area.
Keep in mind that when you do this, it will have negative affects on the tooltip if you're displaying the node descriptions in a tooltip overlay. Hovering anywhere over the block will cause the tooltip to pop up. Someone else might have a better solution that will stop that from happening, but this is something that I believe will work for you.