It's HTML5 Boilerplate(ish) ... in Slim.

slim-html5-boilerplate-ish

doctype html
html.no-js
  head
    meta charset="utf-8"
    meta content="IE=edge" http-equiv="X-UA-Compatible"
    
    title Title
    
    meta content="width=device-width,initial-scale=1" name="viewport"
    
    / Place favicon.ico and apple-touch-icon(s) in the root directory
    
    link href="global.css" rel="stylesheet"
    
    script src="js/vendor/modernizr-2.7.1.min.js"
    script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"
  
  body
    
    /![if lt IE 8]
      <p class="browsehappy">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> to improve your experience.</p>
    
    p Hello world! This is a slim HTML5 document similar to HTML5 Boilerplate.

Here's a more robust version: https://gist.github.com/arxpoetica/8126ca51a52500e74b62