This is a custom made Ghost theme.
The theme uses Epic-UI-kit elements and Epic-icons.
It was built using SASS and it's easy to customize.
You can find the epic ui kit psd and html version here: https://creativemarket.com/EpicShop/473388-Epic-UI-Kit-Bootstrap-Theme
This theme uses one of the article elements from the ui kit.
It is responsive and uses bootstrap 3.