Quotes in WallPress: How to remove the whitespace between the black quote and the little arrow?

To resolve this issue, below is our instruction:
Firstly, follow the jetpack’s guideline in the Blog article on how to use Edit CSS here. http://cmspioneer.com/designwall/blog/using-jetpack-custom-css-for-your-wordpress-site/
Then add the code to the Edit Css.

.format-quote blockquote:after { bottom: -30px; }