Thematic WordPress Theme Toolbox: 10 extremely useful hooksA CSS framework is a software framework created to allow for easier, more standards-compliant web design using HTML/CSS. Many popular CSS frameworks are design-oriented and contain elements that can be re-used in the creation of any website or app, as well as a grid system designed to provide a responsive CSS layout to webpages. All the frameworks listed in this article are free and open source. B
