CSS3基础 速查手册英文.pdfVIP

#192 m o c CONTENTS INCLUDE: . z ❱ New Selectors in CSS3 d r ❱ Color Styles CSS3: Basics a c ❱ Font and Text Styles f e ❱ Background Styles r t ❱ Box UI Styles i By: Jason Cranford Teague s i V ! z Cascading Style Sheets (CSS) standard is a stylesheet language that d allows web developers to add visual and temporal styles to Web pages Will I always need browser extensions? r a using mark-up languages—typically HTML. CSS3 (or CSS Level 3) is the Hot Eventually, after the property is added to the CSS standard, the c latest iteration of the CSS specification as defined by the World Wide Web browser extension is no longer needed, but it could take several f e Consortium’s CSS Workgroup. It builds on features already defined in Tip years before all legacy browsers have been updated. In the R the CSS1, CSS2, and CSS2.1 specifications. CSS4 is also currently under meantime, the website provides an easy to reference e development by the CSS Workgroup but its features are still experimental. chart of supported properties and extensions. r o M Because it is a progression of the previous standards rather than a t replacement, there are few changes from the previous versions, mostly NEW SELECTORS IN CSS3 e additions.