I see two options:
1. Ditch the pan arrows as they are a relic from years ago when web maps did not have click+drag to pan.
2. Re-structure your markup and move the toolbar outside the map's content pane. To do this, you would add an additional border container inside your existing border container, after your accordion container. Then you would put your toolbar inside a content pane with region="top" and your map in another content pane with region="center".
You might actually want to do both. It looks like the toolbar being inside the same content pane as the map is causing the shift+click+drag zoom graphic to be out of alignment too. I would seriously considering just leaving the arrows out though.