Serving either webp or jpeg based on what the browser indicates it can decode.

Actually has a nice overview of why you'd ever might want to use a css framework.

By accident, this page seems to either contain or link to a lot of pages about best practices for web fonts--refer to this (if I ever find use for them)

Summary: Android supports the same offline access tags as the iPhone

Lovely monochrome icons

A number of free-to-use icons specifically related to payments, Like the style more than the subject.

" ... SVG Web is a JavaScript library which provides SVG support on many browsers, including Internet Explorer, Firefox, and Safari. Using the library plus native SVG support you can instantly target ~95% of the existing installed web base. Once dropped in you get partial support for SVG 1.1, SVG Animation (SMIL), Fonts, Video and Audio, DOM and style scripting through JavaScript, and more in about a 60K library. Your SVG content can be embedded directly into normal HTML 5 or through the OBJECT tag ... "