Spacing and colour are the same on all headings with a border on top

- [fix] Space between border and text is the same on all sub headings ("Share this…", "All comments", "Most popular"…)
- [fix] "Share this video" is the same colour (dark grey) as "Share this article"

![ ](http://1.bp.blogspot.com/-Zucyo6sBoJk/UtwIc9qgkUI/AAAAAAABFVE/WatCjofbxbw/s1600/getting-cuddly.gif)