intro_To_HTML_and__CSS_using_presentation.pptx

intro_To_HTML_and__CSS_using_presentation.pptx

• 1.
  Cascading Style Sheets
• 2.
  Cascading Style Sheets •Introduction • Advantages • History of css • Versions of css • CSS-3 Modules
• 3.
  Cascading Style Sheets Cascading Style Sheets, referred to as CSS, is a simple design language intended to simplify the process of making web pages presentable.  CSS handles the look and feel part of a web page.  Using CSS, you can control the color of the text, the style of fonts, the spacing between paragraphs.  How columns are sized and laid out, what background images or colors are used, layout designs , variations in display for different devices and screen sizes as well as a variety of other effects.  CSS is easy to learn and understand but it provides powerful control over the presentation of an HTML document.  Most commonly, CSS is combined with the markup languages HTML or XHTML.
• 4.
  Advantages of CSS CSSsaves time − You can write CSS once and then reuse same sheet in multiple HTML pages. You can define a style for each HTML element and apply it to as many Web pages as you want. Pages load faster − If you are using CSS, you do not need to write HTML tag attributes every time. Just write one CSS rule of a tag and apply it to all the occurrences of that tag. So less code means faster download times. Easy maintenance − To make a global change, simply change the style, and all elements in all the web pages will be updated automatically. Superior styles to HTML − CSS has a much wider array of attributes than HTML, so you can give a far better look to your HTML page in comparison to HTML attributes.
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  Advantages of CSS Multiple Device Compatibility − Style sheets allow content to be optimized for more than one type of device. By using the same HTML document, different versions of a website can be presented for handheld devices such as PDAs and cell phones or for printing.  Global web standards − Now HTML attributes are being deprecated and it is being recommended to use CSS. So its a good idea to start using CSS in all the HTML pages to make them compatible to future browsers.  Offline Browsing − CSS can store web applications locally with the help of an offline cache . Using of this, we can view offline websites . The cache also ensures faster loading and better overall performance of the website.  Platform Independence − The Script offer consistent platform independence and can support latest browsers as well.
• 6.
  History of CSS? CSSwas invented by Håkon Wium Lie on October 10, 1994 and maintained through a group of people within the W3C called the CSS Working Group. The CSS Working Group creates documents called specifications. When a specification has been discussed and officially ratified by W3C members, it becomes a recommendation. These ratified specifications are called recommendations because the W3C has no control over the actual implementation of the language.
• 7.
  Versions of CSS CSS-1 CascadingStyle Sheets, level 1 (CSS1) was came out of W3C as a recommendation in December 1996. This version describes the CSS language as well as a simple visual formatting model for all the HTML tags.
• 8.
  Versions of CSS CSS-2 CSS2was became a W3C recommendation in May 1998 and builds on CSS1.  This version adds support for media- specific style sheets e.g. printers and aural devices, downloadable fonts, element positioning and tables.
• 9.
  Versions of CSS CSS-3 CSS3was became a W3C recommendation in June 1999 and builds on older versions CSS.  it has divided into documentations is called as Modules and here each module having new extension features defined in CSS2.
• 10.
  CSS-3 Modules CSS3 Modulesare having old CSS specifications as well as extension features  Selectors  Box Model  Backgrounds and Borders  Image Values and Replaced Content  Text Effects  2D/3D Transformations  Animations  Multiple Column Layout  User Interface
• 11.
  Thank you RGUKT-IIIT SRIKAKULAM