Striped
Licence notice copied from css/style-1000px.css (file header) and index.html (the introduction text):

Striped 1.0 by HTML5 Up!
html5up.net | @n33co
Free for personal and commercial use under the CCA 3.0 license (html5up.net/license)

Striped is released for free under the Creative Commons Attribution license so feel free to use it for personal projects or even commercial ones – just be sure to credit HTML5 Up! for the design.

Licence: Creative Commons Attribution 3.0
https://creativecommons.org/licenses/by/3.0/
