"... front-end framework for developing responsive, mobile first projects on the web."
- getbootstrap.com
* Resize, rearrange, or hide panels to view the responsive output
* Mouse-over the HTML and click the top-right arrow. Resize the browser window to study responsiveness.
<div class="row">
<div class="col-md-8"></div>
<div class="col-md-4"></div>
</div>
<section class="ingredient">
<div class="ingredient-name"></div>
<div class="ingredient-amount"></div>
</section>
"... extends the CSS language, adding features that allow variables, mixins, functions and many other techniques that allow you to make CSS that is more maintainable, themable and extendable."
- lesscss.org