mediaqueri.es

myinternetscout.com

meetup.com/The-San-Jose-WordPress-Meetup

• Pixel is a static measurement.
• Percent and EM are relative measurements.
• Size of an EM or percent depends on its parent.
• If the text size of body is 16 pixels, then 150% or 1.5 EM will be 24 pixels (1.5 * 16).

virgin.zapmap.com

codex.wordpress.org/CSS

css-tricks.com/css-media-queries

developer.mozilla.org/en-US/docs/Web/CSS/@media

en.wikipedia.org/wiki/Cascading_Style_Sheets

htmldog.com/guides/css

make.wordpress.org/core/handbook/best-practices/coding-standards/css

menacingcloud.com/?c=highPixelDensityDisplays

reference.sitepoint.com/css/at-media

saratogameetup.wordpress.com/2012/09/06/12-more-information

w3.org/TR/css3-mediaqueries

w3schools.com/css/css3_mediaqueries.asp

wordpress.tv/?s=Responsive