Learn how to use CSS in Adobe Dreamweaver

The demo right at the start of this lesson is the most straightforward example of position. There are two rules that have selectors of identical specificity, so the last one to be declared won. Sometimes two or more competing CSS rules could apply to an element.

This saves time, shortens the code, and makes it not as prone to errors. The cascading nature of CSS files is attributed to the fact that style information for a webpage what is css can be defined in any of three different places, also known as style levels. If simple reasoning fails, the following CSS reference page lists many CSS properties.

CSS (cascading style sheets)

For more information on the
rules governing the cascade, inheritance, and specificity, visit /TR/CSS2/cascade.html. CSS level 2 revision 1, often referred to as «CSS 2.1», fixes errors in CSS 2, removes poorly supported or not fully interoperable features and adds already implemented browser extensions to the specification. To comply with the W3C Process for standardizing technical specifications, CSS 2.1 went back and forth between Working Draft status and Candidate Recommendation status for many years. CSS 2.1 first became a Candidate Recommendation on 25 February 2004, but it was reverted to a Working Draft on 13 June 2005 for further review. It returned to Candidate Recommendation on 19 July 2007 and then updated twice in 2009.

Each declaration includes a CSS property name and a value, separated by a colon. A CSS declaration always ends with a semicolon, and declaration blocks are surrounded by curly braces. In short, with CSS features you don’t need to repeatedly describe how individual elements look.

Calculating Specificity Level

In the construction of a second-level page containing three columns, the designer creates a design that has the capability of supplementing pages with few contents in the right column. This is the first second-level template created with the menu items. It has three columns in the homepage with mortised images in the right part of the page. The designer saves these images as one lighter background image to form a part of the second-level pages.

• Development of large
  websites, where fonts and color information were added to every single
  page, became a long and expensive process.
• As a result, your code will be cleaner and easier to maintain.
• For example, headings (h1 elements), sub-headings (h2), sub-sub-headings (h3), etc., are defined structurally using HTML.