title: Customize my ScrollViewer/Scrollbar in xaml/wpf
body: <p>I am really bad when it comes to styling in XAML and I have a really big problem. I want to customize my scrollviewer in the ListBox that I have. I want to look something as simple as this</p>
  
  <p><img src="https://i.stack.imgur.com/Oz7LE.png" alt="http://prntscr.com/ft1j1 "></p>
  
  <p>I hope that someone can help me do this. </p>
  
  <p>Thanks in advance.</p>