2010年7月12日 · > (greater-than sign) is a CSS Combinator(Combine + Selector). A combinator is something that explains the relationship between the selectors. A CSS selector can contain more than one simple selector. Between the simple selectors, we can include a combinator. There are four different combinators in CSS3: descendant selector (space) child ...

2012年5月28日 · The ~ selector is in fact the subsequent-sibling combinator (previously called general sibling combinator until 2017):

2021年5月28日 · The CSS that you referenced is very useful to a web-designer for debugging page layout problems. I often drop it into the page temporarily so I can see the size of all the page elements and track down, for example, the one that has too much padding which is nudging other elements out of place.

Therefore, instead of adding the grid to its CSS, it adds -ms-grid. The vendor prefix kind of says "this is the Microsoft interpretation of an ongoing proposal." Thus, if the final definition of the grid is different, Microsoft can add a new CSS property grid without breaking pages that depend on …

2009年3月2日 · The dot(.) signifies a class name while the hash (#) signifies an element with a specific id attribute. The class will apply to any element decorated with that particular class, while the # style will only apply to the element with that particular id.

The ProBoards CSS style also uses these as variables. Here's a small snipptt from one of their CSS pages: @wrapper_width: 980px; @link_color: #c06806; @link_font: 100% @default_forum_text_font_family; @link_decoration: none; #wrapper { width: @wrapper_width; margin: 0 auto; overflow-x: hidden; } table { table-layout: fixed; } a { cursor: pointer; color: …

2016年9月26日 · That's one of the substring-matching attribute selectors available in CSS3. It matches links with href attributes whose values start with the given string.

In css examples, I've seen rules defined starting with a . and some starting with # - sometimes these are mixed in the same file. What is the difference between these rules: h1 { font-size:18pt;} .new-alerts { font-size:11pt; font-weight:bold;} #old-alerts { position:relative; font-size:10pt; }

2010年5月9日 · Very old question I know, but since this is what came up on the top of my search results, I'll go ahead and answer it with modern day CSS. Since 2021, all browsers are compatible with the :is and :where pseudo-classes. :where has 0 specificity, and :is takes on the specificity of its most specific argument. 1

2009年7月15日 · Sure,this is only practical with a limited set of items, like categories or states, and not unlimited sets like e-shop goods, otherwise the generated CSS would be too big. But it is especially convenient when generating static offline documents. One more trick to do "conditions" with CSS in combination with the generating platform is this: