understrap/style.css

/*
Theme Name: UnderStrap
Theme URI: http://understrap.com
Author: Holger Koenemann
Author URI: http://www.holgerkoenemann.de
Description: Combination of Automattic´s _s theme and Bootstrap 4. Made as a solid starting point for your next theme project and WordPress website. Use it as starter theme or as parent theme. It is up to you. Including Font Awesome support, build-in widget slider and much more you need for basic websites. IMPORTANT: All developer dependencies are not bundelt with this install file. Just donwload the .zip, extract it and run "npm install" and "gulp copy-assets" inside the extracted /understrap folder. 
That downloads everything and move it in place so that you can recompile your CSS and JS files;
A developer version (with Gulp/node and Sass sources) is available on gitHub: https://github.com/holger1411/understrap
A child theme is available on Github, too: https://github.com/holger1411/understrap-child;
Version: 0.4.7
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: understrap
Tags: one-column, custom-menu, featured-images, theme-options, translation-ready

This theme, like WordPress, is licensed under the GPL.
UnderStrap is based on Underscores http://underscores.me/, (C) 2012-2016 Automattic, Inc.

Resource Licenses:
Font Awesome: http://fontawesome.io/license (Font: SIL OFL 1.1, CSS: MIT License)
Bootstrap: http://getbootstrap.com | https://github.com/twbs/bootstrap/blob/master/LICENSE (Code licensed under MIT, documentation under CC BY 3.0.)
Owl Carousel 2: http://www.owlcarousel.owlgraphic.com/ | https://github.com/smashingboxes/OwlCarousel2/blob/develop/LICENSE (Code licensed under MIT)
and of course
jQuery: https://jquery.org | (Code licensed under MIT)
WP Bootstrap Navwalker by Edward McIntyre: https://github.com/twittem/wp-bootstrap-navwalker | GNU GPL
*/

/*
This file is just used to identify the theme in WordPress.
The compiled CSS output can be found in /css/theme.css
The SASS sources for it can be found in /sass/
The dependencies can be found in /src/ after "gulp copy-assets" terminal command

...and now go out and play!
*/