what is the full meaning of html and css

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- What is the meaning of the terms "Normal Flow" and "Out of Flow", in terms of HTML, CSS and Browser?
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 Answered Jul 20, 2010 · 5 votes
 Out of Flow is any element that has been positioned relatively or absolutely or anything that has been floated.
 The rest would be considered Normal Flow.
 Look at CSS Positioning and Layout and pay close attention to the "Methods of Positioning Elements" section.
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- What is "q" and "+" in the CSS style of the html body tag?
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 Answered Aug 02, 2020 · 0 votes
 It's a CSS 'q' length, as an absolute length unit. 1q is equivalent to 1/40th of 1cm.
 EDIT
 Firstly, the inline style tag works without quotes because it is considered optional.
 border:dashed + 53q #fdc57b; : We're having a dashed border, a + 53q and a color at the end. The `+ 53q' is a CSS selector.
 The '+' sign in CSS is an adjacent sibling combinator. It combines two sequences of simple selectors having the same parent and the second one must come immediately after the first.
 If you would view this yourself in a browser, you would notice that if you changed the value of 53 the dashed border would be changed in size. Or if you would remove it, the dashed border will have these small lines instead.
 However i don't know why there is no closing brackets in the clip-path:inset(53q+0, maybe poorly written. Either way, it works.
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- What is the benefit of using :root CSS selector instead of html CSS selector?
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 Answered Apr 24, 2020 · 9 votes
 You pretty-much answered your own question with the last bit about :root matching both <html> and <svg> - or any other root element in non-HTML documents.
 Remember that CSS is also designed to be compatible with more than just HTML and SVG, it's also designed to be compatible with XML, and with XML the root element might share the same element-name as a child-element - so this is a way to work with those kinds of documents because CSS offers no other way of selecting only the root element for styling, so it's in the same family as :first-child, :first-of-type, :last-of-type, etc.
 I'll add there's also the risk that a malformed HTML document might have an illegal <html> element located elsewhere in the DOM. If you use just html as a selector then those additional <html> elements will also be styled, which would break your site's layout if you have the commonplace html { min-height: 100%; height: 100%; } rule. Changing it to html:root { ... } fixes that.
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- What is the actual meaning of separation of content and presentation?
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 Answered Jun 20, 2020 · 12 votes
 When defining what is content and presentation, see your HTML document as a data container. Then ask yourself the following on each element and attribute:
 Does the attribute/element represent a meaningful entity in my data?For example, are the words between tag are in bold simply for display purposes or did I want to add emphasis on that data?
 Am I using the proper attribute/element to property represent the type of data I want to represent?Since I want to add emphasis on that particular section, I should use (it doesn't mean italic, it means emphasis and can be made bold) or depending of the level of emphasis wanted.
 Am I using the attribute/element only for display purposes? If yes, can the element be removed and the parent element styled using CSS?Sometimes an presentational tag can simply be replaced by CSS rules on the parent element. In which case, the presentational tag needs to be removed.
 After asking yourself these three simple questions, you are usually able to make a pretty informed decision. An example:
 Original Code: <label for="name">Name:</label>
 Checking the tag...
 Does the attribute/element represent a meaningful entity in my data? No, the tag doesn't represent a data node. It is there purely for presentation.
 Am I using the proper attribute/element to property represent the type of data I want to represent? is used for presentation of bold elements.
 Am I using the attribute/element only for display purposes? If yes, can the element be removed and the parent element styled using CSS? Since is presentational and I am using it for presentation, yes. And since the element affects the whole of <label>, it can be removed and style be applied to the <label>.
 Semantic HTML's goal is not to simplify design and redesign or to avoid inline styling, but to help a parser understand what that particular tag represent in your document. That way, applications can be created (ie.: search engine) to intelligently decide what your content signify and to classify it accordingly.
 Therefore, it makes sense to use the CSS property content: to add quotes around text located in a <q> tag (it has no value to the data contained in your document other that presentation), but no sense to the use the same CSS property to add a © symbol in your footer as it does have a value in your data.
 Same applies to attributes. Using the width and height attribute on an <img> tag representing an icon at size 16x16 makes semantic sense as it is important to understand the meaning of the <img> tag (an icon can have different representations depending on the size it is displayed at). Using the same attributes on an <img> tag representing a thumbnail of an larger image does not.
 Sometimes you will need to add non-semantic elements to be able to achieve your wanted presentation, but usually those are avoidable.
 There are no wrong elements. There are wrong uses of particular elements. should not be used when adding emphasis. should be used for legal sub-text, not to make text smaller (see HTML5 - Section 4.6.4 for why), etc... All elements have a particular usage scenario and they all represent data (minus presentational elements, but they do have a use in some cases). No elements should be set aside.
 Attributes are a different thing. Most the attributes are presentational in nature. Attributes such as <img border> and <body fgcolor> rarely have signification in the data you are representing therefore you should not use them (except in those rare cases).
 Search Engines are a good examples as to why semantic documents are so important. Microformats are a predefined set of elements and classes which you can use to represent data which search engines will understand in a certain way. The product price information in Google Searches is an example of semantics at work.
 By using the predefined rules in set standards to store information in your document allows third-party programs to understand what seems to be a wall of text without using heuristics algorithms which may be prone to failures. It also helps screen readers and other accessibility applications to more easily understand the context in which the information is presented. It also greatly helps the maintainability of your markup as everything is tied to a set definition.
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- What is the meaning of margin-left: max(40px); and how does this works?
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 Answered Dec 05, 2019 · 4 votes
 max() is a function in CSS that is part of CSS Values and Units Module Level 4.
 It lets you define a list of values, from which the maximum is used:
 margin-left: max(40px, 60px, 80px);-
 
 The result is:
 margin-left: 80px;-
 
 It's also possible to use expressions without calc inside:
 Note: Full math expressions are allowed in each of the arguments; there’s no need to nest a calc() inside! You can also provide more than two arguments, if you have multiple constraints to apply.
 margin-left: max(10 * (1vw + 1vh) / 2, 12px);-
 
 Unfortunately the browser support for max() and also min() or clamp() is not that broad, and this code snippet will work in Safari and Chrome only at the moment:
 div { width: 10px; height: 10px; background: red; margin-left: max(40px, 200px); }
 
 As you came across this in a SASS context, it's also worth noticing that there's a max()
 
 function in SASS as well. And it's older than the native one:
 CSS added support for min() and max() functions in Values and Units Level 4, from where they were quickly adopted by Safari to support the iPhoneX. But Sass supported its own min() and max() functions long before this, and it needed to be backwards-compatible with all those existing stylesheets. This led for the need for extra-special syntactic cleverness.
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What is HTML & CSS?
HTML is a markup language that web browsers use to interpret and compose text, images, and other material into visible or audible web pages. Default characteristics for every item of HTML markup are defined in the browser, and these characteristics can be altered or enhanced by the web page designer's additional use of CSS.

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What is CSS and how does it work?
CSS stands for cascading style sheets and is an element of front-end development responsible for determining the overall styling and layout of a web page. Working in conjunction with HTML, CSS is directly responsible for dictating color, background, text color, font, positioning and additional features to the web browser.

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What is the difference between HTML & CSS?
HTML can embed programs written in a scripting language such as JavaScript, which affects the behavior and content of web pages. The inclusion of CSS defines the look and layout of content.

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What is HTML coding?
It defines the content and structure of web content. It is often assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as JavaScript . Web browsers receive HTML documents from a web server or from local storage and render the documents into multimedia web pages.

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www.w3schools.com › html › html_cssHTML Styles CSS - W3Schools

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CSS stands for Cascading Style Sheets. CSS saves a lot of work. It can control the layout of multiple web pages all at once. CSS = Styles and Colors. Manipulate Text. Colors, Boxes. What is CSS? Cascading Style Sheets (CSS) is used to format the layout of a webpage.
www.freecodecamp.org › news › what-is-htmlWhat is HTML – Definition and Meaning of Hypertext Markup ...

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Aug 24, 2021 · HTML, or Hypertext Markup Language, is a markup language for the web that defines the structure of web pages. It is one of the most basic building blocks of every website, so it's crucial to learn if you want to have a career in web development. In this article, I will walk you through what HTML is about in detail, how it does things on web ...
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Dec 17, 2021 · CSS stands for cascading style sheets and is an element of front-end development responsible for determining the overall styling and layout of a web page. Working in conjunction with HTML, CSS is directly responsible for dictating color, background, text color, font, positioning and additional features to the web browser.
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en.wikipedia.org › wiki › HTMLHTML - Wikipedia

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The inclusion of CSS defines the look and layout of content. The World Wide Web Consortium (W3C), former maintainer of the HTML and current maintainer of the CSS standards, has encouraged the use of CSS over explicit presentational HTML since 1997.
developer.mozilla.org › docs › LearnWhat is CSS? - Learn web development | MDN - MDN Web Docs

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Jan 1, 2024 · CSS is a rule-based language — you define the rules by specifying groups of styles that should be applied to particular elements or groups of elements on your web page. For example, you can decide to have the main heading on your page to be shown as large red text.
www.w3schools.com › css › css_introCSS Introduction - W3Schools

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CSS stands for Cascading Style Sheets. CSS describes how HTML elements are to be displayed on screen, paper, or in other media. CSS saves a lot of work. It can control the layout of multiple web pages all at once. External stylesheets are stored in CSS files. CSS Demo - One HTML Page - Multiple Styles!
developer.mozilla.org › docs › LearnLearn to style HTML using CSS - Learn web development | MDN

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Mar 5, 2024 · CSS (Cascading Style Sheets) is used to style and layout web pages — for example, to alter the font, color, size, and spacing of your content, split it into multiple columns, or add animations and other decorative features.

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