Fixes search next/previous buttons wrapping in Firefox.
Fixes search next/previous buttons wrapping in Firefox.

For me, a 7px margin was just enough to cause the buttons to wrap and display on top of each other. I put it to 5px just to be safe, even though 6px also worked for me.
jupyter/jupyterlab,jupyter/jupyterlab,jupyter/jupyterlab,jupyter/jupyterlab,jupyter/jupyterlab