Change size of Calc scrollbars Version: 6.2.2.2

I just installed Ubuntu 19.04 and in the previous install (18.04 LTS) I had modified the CSS I believe to make the scrollbars bigger. I can’t seem to locate the directions on this procedure. However, a google search revealed solutions.

By going to… /usr/share/themes/elementary … then /gtk-2.0/gtkrc
Some directions use Mint in place of elementary, however I’m not on Mint.

Where do I go to adjust the scrollbars in LibreOffice 6.2.2.2 on Ubuntu 19.04?

Version: 6.2.2.2
Build ID: 1:6.2.2-0ubuntu2
CPU threads: 4; OS: Linux 5.0; UI render: default; VCL: gtk3;
Locale: en-US (en_US.UTF-8); UI-Language: en-US
Calc: threaded

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