Proposal Breakdown Structure Bar - reduce white space

Description: In the proposal breakdown structure tool bar, Each level created in the folder structure indents the below structures, causing excess white space in the bar, requiring to make the bar larger to see the text and folders.
Is there a way to reduce this white space generated with each level of folders.
Use Case/Example:

Constantly adjusting the size of the bar when searching for specific folders within the proposal to be able to see the below folder names.