Content character encoding in css3

Content has 5 Properties

Content: ""; // null

Content: attr (title); // you can obtain the tag attribute value or custom attribute value. For example, if css is div: after {content: attr (gaga)}, you can get 123.

Content: "Who am I"; // enter a string such

// Css is div: after {content: "I am" counter (title) ", I am afraid" counter (gaga);} The result is "I am gaga2, i'm afraid gaga1 ";

Content: "\ 21e0"; // get the character set icon slash of the following graph to escape it. However, some icons are directly different in the browser.

Content: url(123.gif); // use the specified absolute or relative address to insert an external resource (image, audio, video, or any other resource supported by the browser)