class="no-js"
https://github.com/SaraSoueidan/textured-text-techniques/blob/master/TexturedText/index.html
This is instruction for
Modernizr
If JavaScript in your browser is enabled, Modernizr changes no-js to js class;
so you can define CSS styles for JavaScript-enabled browsers and for JavaScript-disabled browsers
https://stackoverflow.com/questions/6724515/what-is-the-purpose-of-the-html-no-js-class
https://css-tricks.com/forums/topic/why-every-template-using-no-js-class/
<!--[if IE 8 ]> <html lang="en" class="no-js ie8"> <![endif]-->
<!--[if IE 9 ]> <html lang="en" class="no-js ie9"> <![endif]-->
<!--[if (gt IE 9)|!(IE)]><!--> <html lang="en" class="no-js"> <!--<![endif]-->