short answer: base64. See: http://stackoverflow.com/questions/1124149/embedding-background-image-data-into-css-as-base64-good-or-bad-practice http://stackoverfl

short answer: base64. See: http://stackoverflow.com/questions/1124149/embedding-background-image-data-into-css-as-base64-good-or-bad-practice http://stackoverflow.com/questions/1124149/embedding-backgro...