![[Google]]( http://absolutepositioning.com/wp-content/plugins/easy-adsenser/google-light.gif)
Archive for 'Cascading style sheets (CSS)' Category
Cascading style sheets (CSS)
Style was separated from content with the advent of cascading style sheets. So, let us begin by understanding what CSS has to say about element positioning. We shall also look at a few examples of element positioning in CSS and compare them with the concept of absolute positioning.
Understanding CSS
Cascading style sheets define positioning as placement of elements on a web page. However, the coordinate system within which a block is positioned is determined by the positioning context of the block. Every time an element is positioned within the block, the position is calculated with reference to its new coordinate system. By default, elements [...]
Types of positioning
While this default “flow” does not give the designer much scope for manipulating layouts, CSS allows the designer to apply a small set of attributes to the elements of the page and control their position by defining coordinates within which they will appear. CSS 1 provided the user with the ability to specify: The width [...]
Static positioning
Static positioning is the default positioning of elements on the page. It sources the element as in the HTML and places them linearly one after another. The elements cannot be repositioned and do not have defined coordinates for the element’s position. However, the <body> element is positioned and provides the coordinates for the child elements [...]
Relative positioning
Relative positioning is similar to static positioning in that the elements are part of the flow. However, they differ from static positioning in that they can be moved around relative to the position they would normally occupy. For instance, if an object would normally appear at top =10 and left =10 and the object ‘s [...]
Absolute positioning
We will deal with absolute positioning very briefly here as we propose to devote a whole section to it a little later in this tutorial. Absolute positioning positions the element in a fixed point within its container. It cannot be moved from its position. The top and left declarations determine its position. The element then [...]
Fixed positioning
Fixed positioning is often regarded as a subset of absolute positioning. Like the containing boxes of absolutely positioned elements, the boxes of the fixed positioned elements are independent. However, the placement is different. Instead of localizing the element on the body of the page, the element is allowed to flow with the dimensions of the [...]
Floats
Floats are not regarded as part of element positioning. However, it is mentioned here as they are often referred to as a method of positioning the element on a web page and is fast becoming a layout tool that web designers are experimenting with. Often, floats are used with statically positioned elements and when an [...]
Style sheet differences in browsers
Ideally, you should be able to deploy your website by using only one set of CSS for it. However, this is still a distant dream, and you will soon find that you need different style sheets for different browsers. Browsers still suffer from uneven levels of implementation of CSS standards. The implementation bugs in each [...]
Absolute positioning in CSS
Absolute positioning is one of the more powerful features of CSS and can be used to an advantage by an experienced web designer. Absolute positioning is specified by giving values for the top, bottom, left, and right properties. These properties will specify the distance from corresponding edge of the page or its parent element. This [...]