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The Cascading Style Sheets (CSS) specification describes how elements of web pages are displayed by graphical browsers. Section 4 of the CSS1 specification defines a "formatting model" that gives block-level elements—such as p and blockquote—a width and height, and three levels of boxes surrounding it: padding, borders, and margins. [4]
To demonstrate specificity Inheritance Inheritance is a key feature in CSS; it relies on the ancestor-descendant relationship to operate. Inheritance is the mechanism by which properties are applied not only to a specified element but also to its descendants. Inheritance relies on the document tree, which is the hierarchy of XHTML elements in a page based on nesting. Descendant elements may ...
The padding of an element is the space around the content but which still forms part of the element. Padding should not be used to create white space between two elements. Any background style assigned to the element, such as a background image or color, will be visible within the padding.
A Cascading Style Sheets (CSS) rule that includes a background image: ul. checklist li. complete {padding-left: 20 px; background: white url ('data:image/png; ...
CSS Flexible Box Layout, commonly known as Flexbox, [2] is a CSS web layout model. [4] It is in the W3C 's candidate recommendation (CR) stage. [ 2 ] The flex layout allows responsive elements within a container to be automatically arranged depending on viewport (device screen) size.
Style may be chosen specifically for a piece of content, see e.g., color; scope of parameters Alternatively, style is specified for CSS selectors, expressed in terms of elements, classes, and ID's.
Positioning is simple in this method, as the container of a column's content also contains its background. A padding value of 32767px is the largest that will be recognized by all modern browsers. If the difference in column heights is greater than this, the background of the shorter column will not fully fill the column. [10]
Sites that use CSS with either XHTML or HTML are easier to tweak so that they appear similar in different browsers (Chrome, Internet Explorer, Mozilla Firefox, Opera, Safari, etc.). Sites using CSS " degrade gracefully " in browsers unable to display graphical content, such as Lynx , or those so very old that they cannot use CSS.