How to compactly place the search block?

Question

JavaScript

The search engine will need to be used very often, but at the same time I would very much like to save space for the diagram. How can these two requirements be effectively combined?
I would be very grateful for the options.

Answer 1

Make the dnd block and make it very transparent. And when you hover the cursor, remove the transparency ...

Answer 2

make a block 40x40 pixels position relative
and inside put 320x240 pixels position absolute
and when you hover over the block with position relative display the block with position absolute
here is an example jsbin.com/vojiyus/1/edit /1/edit