This was a project for a website redesign of cigna.com. On this project with SapientNitro, I had to identify breakpoints for the mobile, tablet, desktop. We used the Bootstrap api to give the website a responsive framework.
We created a module and asset library so the site is easily customizable, and developers in the future didn't have to depend on a designer to contruct every page in Photoshop.
Modules were styled using CSS to make it easier for developers to plug and play.