Using CSS overflow-x or overflow-y

The width and height need to be a fixed value rather than percentage if using css overflow-x or overflow-y for scroll bar.

blockquote { width: 50px; height: 50px; overflow-y: scroll }

<blockquote style=”width: 50px; height: 50px; overflow-y: scroll”>some text</blockquote>

HTML Color Code

http://html-color-codes.com/