exactly what i was looking for. good job ccdoub!!

For years I have used many extensions, never wrote a review before.
This is a Really useful addition. For some time I have been wanting to quickly find my scroll place on large articles. This helpful extension gives me easy control over the web page

Can you provide a feature to hide the scroll bar?

Simple and effective add-on useful for people like me who completely hide the huge scrollbars in Firefox Quantum. In addition, in long pages of text it helps to remember the position of the most important passages. Thank you.

In some web sites the percent number is not on top but remain behind on some page element.
This happen on Netvibes and Reddit, on Techdows.com the font change.
Thanks.

EDIT: The version 1.3.2 works perfectly on Firefox 63beta. :-)