Gridless is an optionated HTML5 and CSS3 boilerplate for making mobile first responsive, cross-browser websites with beautiful typography. Gridless is an optionated HTML5 and CSS3 boilerplate for making mobile first responsive, cross-browser websites with beautiful typography. Gridless uses mobile first responsive web design to adapt itself to the device's width. This means it'll work anywhere: old feature phones, newer smartphones, tablets, notebooks and bigger desktops. IE6/7/8 don't support media queries, so we use Respond.js to polyfill that. Gridless is extremely simple and straightforward. It doesn't come with any predefined grid systems or non-semantic classes. Gridless is meant to be a starting point, which should be edited, tweaked and overwritten to suit each project's design requirements.