No-Library (pure JS), HTML, CSS, JavaScript
SO #18516317 http://stackoverflow.com/questions/18516317/vertically-align-an-image-inside-a-div-with-responsive-height
jQuery 1.10.1, HTML, CSS, JavaScript
http://stackoverflow.com/questions/21900767/position-fixed-and-backface-visibility
Mootools 1.3.1 (compat), HTML, CSS, JavaScript