Session storage is a new feature introduced by the W3C’s “Web Storage” specification. It’s supported in Internet Explorer 8+, Firefox, Chrome, Safari and Opera Desktop (for a complete list, please c
Generated content was first introduced in the CSS2 specification. For several years, the feature was used by relatively few Web authors due to inconsistent browser support. With the release of Inter
Before 1998, the birth year of CSS Level 2, form elements were already widely implemented in all major browsers. The CSS 2 specification did not address the problem of how form elements should be pr
