jScrollPane trouble with css

[René Pfenniner]

first Sorry for my english ;-(.

i have a questen:

on this side i have a Joomla 3.4.8

http://www.exquisit-webdesign.ch/kunden/idh/

And i try to itegarat the jScrollPane (code from this side http://jscrollpane.kelvinluck.com/basic.html) Version Basic

My Problem know:

i get no conntact to the CSS, i want Change Collers and Style from the Scrollpane.

When i open the Source in the Browser and i klick to the

css and javascrip Source path it Looks OK

I have no Idee wats rowng.

i am happy for every help

thank you