Yahoo Web Search

Search results

1. • Navigation links

     • The tag defines a set of navigation links. Notice that NOT all links of a document should be inside a element. The element is intended only for major blocks of navigation links. Browsers, such as screen readers for disabled users, can use this element to determine whether to omit the initial rendering of this content.
     www.w3schools.com › TAgs › tag_nav

     HTML nav Tag - W3Schools

2. Top results related to what is a nav element in css?

   • What is the difference between a pseudo-class and a pseudo-element in CSS?

     Top Answer

     Answered Aug 02, 2012 · 90 votes

     The CSS 3 selector recommendation is pretty clear about both, but I'll try to show the differences anyway.

     Pseudo-classes

     Official description

     The pseudo-class concept is introduced to permit selection based on information that lies outside of the document tree or that cannot be expressed using the other simple selectors.

     A pseudo-class always consists of a "colon" (:) followed by the name of the pseudo-class and optionally by a value between parentheses.

     Pseudo-classes are allowed in all sequences of simple selectors contained in a selector. Pseudo-classes are allowed anywhere in sequences of simple selectors, after the leading type selector or universal selector (possibly omitted). Pseudo-class names are case-insensitive. Some pseudo-classes are mutually exclusive, while others can be applied simultaneously to the same element. Pseudo-classes may be dynamic, in the sense that an element may acquire or lose a pseudo-class while a user interacts with the document.

     Source

     What does this mean?

     The important nature of pseudo-classes is stated in the very first sentence: "the pseudo-class concept [...] permit selection". It enables the author of an stylesheet to differ between elements based on information that "lies outside of the document tree", for example the current status of a link (:active,:visited). Those aren't saved anywhere in the DOM, and there exists no DOM interface to access these options.

     On the other hand, :target could be accessed via DOM manipulation (you could use window.location.hash in order to find the object with JavaScript), but this "cannot be expressed using the other simple selectors".

     So basically a pseudo-class will refine the set of selected elements as any other simple selector in a sequence of simple selectors. Note that all simple selectors in a sequence of simple selectors will be evaluated at the same time. For a complete list of pseudo-class check the CSS3 selector recommendation.

     Example

     The following example will color all even rows gray (#ccc), all uneven rows which aren't dividable by 5 white and every other row magenta.

     table tr:nth-child(2n) td{ background-color: #ccc;}-table tr:nth-child(2n+1) td{ background-color: #fff;}-table tr:nth-child(2n+1):nth-child(5n) td{ background-color: #f0f;}-

     Pseudo-elements

     Official description

     Pseudo-elements create abstractions about the document tree beyond those specified by the document language. For instance, document languages do not offer mechanisms to access the first letter or first line of an element's content. Pseudo-elements allow authors to refer to this otherwise inaccessible information. Pseudo-elements may also provide authors a way to refer to content that does not exist in the source document (e.g., the ::before and ::after pseudo-elements give access to generated content).

     A pseudo-element is made of two colons (::) followed by the name of the pseudo-element.

     This :: notation is introduced by the current document in order to establish a discrimination between pseudo-classes and pseudo-elements. For compatibility with existing style sheets, user agents must also accept the previous one-colon notation for pseudo-elements introduced in CSS levels 1 and 2 (namely, :first-line, :first-letter, :before and :after). This compatibility is not allowed for the new pseudo-elements introduced in this specification.

     Only one pseudo-element may appear per selector, and if present it must appear after the sequence of simple selectors that represents the subjects of the selector.

     Note: A future version of this specification may allow multiple pseudo-elements per selector.

     Source

     What does this mean?

     The most important part here is that "pseudo-elements allow authors to refer to [..] otherwise inaccessible information" and that they "may also provide authors a way to refer to content that does not exist in the source document (e.g., the ::before

     and ::after

     pseudo-elements give access to generated content).". The biggest difference is that they actually create a new virtual element on which rules and even pseudo-class selectors can be applied to. They don't filter elements, they basically filter content (::first-line,::first-letter) and wrap it in a virtual container, which the author can style however he want (well, almost).

     For example the ::first-line pseudo-element cannot be reconstructed with JavaScript, as it heavily depends on the current used font, the fonts size, the elements width, floating elements (and probably the time of the day). Well, that's not entirely true: one could still calculate all those values and extract the first line, however doing so is a very cumbersome activity.

     I guess the biggest difference is that "only one pseudo-element may appear per selector". The note says that this could be subject to change, but as of 2012 I don't believe we see any different behavior in the future (it's still in CSS4).

     Example

     The following example will add a language-tag to every quote on a given page using the pseudo-class :lang and the pseudo-element ::after:

     q:lang(de)::after{ content: " (German) ";}-q:lang(en)::after{ content: " (English) ";}-q:lang(fr)::after{ content: " (French) ";}-q:not(:lang(fr)):not(:lang(de)):not(:lang(en))::after{ content: " (Unrecognized language) ";}-

     TL;DR

     Pseudo-classes act as simple selectors in a sequence of selectors and thereby classify elements on non-presentational characteristics, pseudo-elements create new virtual elements.

     References

     W3C

     • Selectors Level 3 4. Selector syntax6.6 Pseudo-classes7. Pseudo-elements
     • CSS 2.1 Specification (outdated but still informative) 5.2 Selector syntax:A simple selector is either a type selector or universal selector followed immediately by zero or more attribute selectors, ID selectors, or pseudo-classes, in any order. The simple selector matches if all of its components match.
     • 5.10 Pseudo-elements and pseudo-classes

     Other Answers

     Answered Nov 09, 2011 · 47 votes

     A pseudo-class filters existing elements. a:link means all <a>s that are :link.

     A pseudo-element is a new fake element. div::after means non-existing elements after <div>s.

     ::selection is another example of a pseudo-element. It doesn't mean all elements that are selected; it means the range of content that is selected, which may span portions of multiple elements.

     Other Answers

     Answered Jul 22, 2016 · 18 votes

     Short description that helped me to understand the difference:

     • Pseudo-classes describe a special state.
     • Pseudo-elements match virtual elements.

     Check all answers on Stack Overflow

     1/5

   • What is proper way to Center a Label element using CSS in a asp.net .master page

     Top Answer

     Answered Sep 11, 2014 · 2 votes

     So, since the comment worked, here's the posted answer.

     Instead of your align-items that you set on the wrapper div, use the text-align property, that is used to specify the alignment of inline content:

     <div style="text-align: center"> <asp:Label ID="Label1" runat="server" CssClass="ccfgaLabel" ForeColor="#0066FF" Text="Calvary Christian FellowshipGA, Inc."></asp:Label></div>

     Though I recommend you not to set it as an inline style. Rather, give the div an id or a class and leave the property on the stylesheet.

     MDN text-align docs

     Check all answers on Stack Overflow

     2/5

   • What is a pixel (px) in CSS (in times of retina displays)?

     Top Answer

     Answered Jun 20, 2020 · 9 votes

     What is a pixel in CSS in times of retina displays?

     From CSS Techniques For Retina Displays:

     CSS pixel is an abstract unit used by the browsers to draw images and other content on a web page. CSS pixels are DIPs which means they are device independent pixels. They readjust themselves according to the pixel density of the screen they are rendered in.

     If we have the following piece of code:

     <div style=”width:150px; height:200px”></div>

     The HTML component above would look 150px by 200px in size in a standard display while 300px by 400px in a Retina display to retain the same physical size.

     What is a px in CSS?

     Per Understanding pixels and other CSS units, on a high resolution device, a CSS px is 1/96th of an inch.

     The CSS pixel is a ‘reference’ pixel, not a device pixel. This is misleading and, personally, I prefer the notion of ‘user unit’ that SVG uses because I think it is easier to then explain the mapping to physical units and device pixels. But once one understands that a ‘px’ is actually a reference, not a device pixel, things make more sense. The thing to remember is that a CSS px is an abstract unit and there is a ratio controlling how it a) maps to actual device pixels and b) maps to physical units (in a fixed way, the ratio is always 96 CSS px to an inch).

     A CSS inch is exactly or ‘close’ to an inch. On high resolution devices, and if no other parameters interfere (like user zoom or CSS transforms), an inch will be a physical inch as expected. On low resolution devices, there will be a margin of error, as explained above.

     Scalability and adaptability is what matters most. The most important aspect for most developers is that content layout can reflow and adapt as units scale in a predictable and reasonable way. While the concept of keeping the exact aspect ratio on all devices might seem appealing, it has consequences that are not desirable on low resolution devices (such as unwanted antialiasing causing blurry rendering).

     Check all answers on Stack Overflow

     3/5

   • What is right and left of element in CSS

     Top Answer

     Answered Apr 10, 2014 · 0 votes

     left

     is the distance from the left edge; right

     is the distance from the right edge.

     For instance, if I set left: 10px, it will move the element 10px away from the left edge of the element.

     If you want to move to the left, you can use negative values, e.g. left: -10px.

     The same applies to the top and bottom properties.

     W3Schools puts it this way:

     Sets the left edge of the image [distance] to the right of the left edge of its containing element

     Check all answers on Stack Overflow

     4/5

   • What is a pixel (px) in CSS?

     Top Answer

     Answered Mar 02, 2009 · 35 votes

     This is a little beyond where you might be at the moment, but a CSS pixel is not necessarily exactly the same size as a single pixel on your display. According to the spec:

     If the pixel density of the output device is very different from that of a typical computer display, the user agent should rescale pixel values. It is recommended that the reference pixel be the visual angle of one pixel on a device with a pixel density of 96dpi and a distance from the reader of an arm's length.

     So if you have one of those incredibly expensive extra-high-resolution displays that doesn't count as “typical”, the browser and/or OS may choose to redefine what a “pixel” is.

     The useful definition for a ‘px’ as far as CSS authoring is concerned is: a ‘px’ is the quantity of length equal to the pixel in an unscaled HTML <img> or CSS ‘background-image’.

     Other Answers

     Answered Nov 09, 2011 · 47 votes

     A pseudo-class filters existing elements. a:link means all <a>s that are :link.

     A pseudo-element is a new fake element. div::after means non-existing elements after <div>s.

     ::selection is another example of a pseudo-element. It doesn't mean all elements that are selected; it means the range of content that is selected, which may span portions of multiple elements.

     Other Answers

     Answered Jul 22, 2016 · 18 votes

     Short description that helped me to understand the difference:

     • Pseudo-classes describe a special state.
     • Pseudo-elements match virtual elements.

     Check all answers on Stack Overflow

     5/5

   Show moreShow less

3. www.w3schools.com › TAgs › tag_navHTML <nav> Tag - W3Schools

   www.w3schools.com › TAgs › tag_nav

   • Cached

   Definition and Usage. The <nav> tag defines a set of navigation links. Notice that NOT all links of a document should be inside a <nav> element. The <nav> element is intended only for major blocks of navigation links.

   • Tryit Editor V2.6

     The W3Schools online code editor allows you to edit code and...

   • Noframes

     W3Schools offers free online tutorials, references and...

4. People also ask

   What is a nav> HTML element?

   • This page was last modified on Jul 26, 2024 by MDN contributors. The HTML element represents a section of a page whose purpose is to provide navigation links, either within the current document or to other documents. Common examples of navigation sections are menus, tables of contents, and indexes.

   : The Navigation Section element - HTML: HyperText Markup Languag…

   developer.mozilla.org/en-US/docs/Web/HTML/Element/nav

   See all results for this question

   What is a nav tag in HTML?

   • The HTML tag defines a navigation section in a webpage, organizing and presenting links for user navigation. It enhances accessibility by helping screen readers identify primary navigation areas, often containing menus, tables of contents, or indexes, structured within lists or as standalone links.

   HTML Tag - GeeksforGeeks

   www.geeksforgeeks.org/html-nav-tag/

   See all results for this question

   What does Nav> mean in HTML5?

   • The element can be used to group the main navigation links, such as links to different sections or pages of a website. The tag is one of the HTML5 elements. It is used to specify a block of navigation links, either within the current document or to other documents.

   HTML Tag - W3docs

   www.w3docs.com/learn-html/html-nav-tag.html

   See all results for this question

   Why should I use a nav element?

   • The Nav Element can improve your website’s SEO by making it easier for search engines to understand the structure of your page. By using the Nav Element to define your navigation links, you can help search engines understand the relationship between different pages or sections of your page. Can I style the Nav Element with CSS?

   A Look at the HTML5 Nav Element — SitePoint

   www.sitepoint.com/look-html5-nav-element/

   See all results for this question

5. developer.mozilla.org › docs › Web<nav>: The Navigation Section element - MDN Web Docs

   developer.mozilla.org › docs › Web

   • Cached

   • Overview
   • Attributes
   • Usage notes
   • Examples
   • Browser compatibility
   • See also

   The HTML element represents a section of a page whose purpose is to provide navigation links, either within the current document or to other documents. Common examples of navigation sections are menus, tables of contents, and indexes.

   See full list on developer.mozilla.org

   This element only includes the global attributes.

   See full list on developer.mozilla.org

   •It's not necessary for all links to be contained in a element. is intended only for a major block of navigation links; typically the element often has a list of links that don't need to be in a element.

   •A document may have several elements, for example, one for site navigation and one for intra-page navigation. aria-labelledby can be used in such case to promote accessibility, see example.

   See full list on developer.mozilla.org

   In this example, a block is used to contain an unordered list ( ) of links. With appropriate CSS, this can be presented as a sidebar, navigation bar, or drop-down menu.

   The semantics of the nav element is that of providing links. However a nav element doesn't have to contain a list, it can contain other kinds of content as well. In this navigation block, links are provided in prose:

   See full list on developer.mozilla.org

   BCD tables only load in the browser with JavaScript enabled. Enable JavaScript to view data.

   See full list on developer.mozilla.org

   •Other section-related elements: , , , , h1, h2, h3, h4, h5, h6, , , , ;

   •Sections and outlines of an HTML document.

   See full list on developer.mozilla.org

6. Videos

   • 

     5:23

     youtube.com

     [HTML-Tutorial-12] nav Element | Navigation | Web Development for Beginners

     Oct 2, 2020

     77.4K Views

   • 

     6:28

     youtube.com

     How to create a CSS navigation bar in 6 minutes! 🧭

     Sep 21, 2023

     297.6K Views

   • 

     15:08

     youtube.com

     Navbar CSS Tutorial: 3 Ways to Create a Navigation Bar with Flexbox

     Apr 29, 2019

     2.7M Views

   View all

7. www.w3docs.com › learn-html › html-nav-tagHTML <nav> Tag - W3docs

   www.w3docs.com › learn-html › html-nav-tag

   • Cached

   The <nav> tag is an HTML5 element used to define a section of navigation links within a web page. This tag helps with both the structure and semantics of the webpage, making it more accessible for users and search engines alike.

8. www.geeksforgeeks.org › html-nav-tagHTML <nav> Tag - GeeksforGeeks

   www.geeksforgeeks.org › html-nav-tag

   • Cached

   Aug 26, 2024 · The HTML <nav> tag defines a navigation section in a webpage, organizing and presenting links for user navigation. It enhances accessibility by helping screen readers identify primary navigation areas, often containing menus, tables of contents, or indexes, structured within lists or as standalone links.

9. www.html-easy.com › references › html-nav-tagHTML <nav> Tag: Usage, Attributes, and Examples

   www.html-easy.com › references › html-nav-tag

   • Cached

   Sep 25, 2023 · The <nav> tag in HTML5 acts as a container for navigation links. It’s typically used in areas containing major navigation blocks such as primary site navigation, footers or breadcrumbs. The main goal? Guiding users smoothly from page to page. Now, let’s look at how it works – here’s a simple example: <nav> <a href="/home">Home</a> |.

10. www.sitepoint.com › look-html5-nav-elementA Look at the HTML5 Nav Element - SitePoint

    www.sitepoint.com › look-html5-nav-element

    • Cached

    The Nav Element can improve your website’s SEO by making it easier for search engines to understand the structure of your page. By using the Nav Element to define your navigation links,...

11. blog.hubspot.com › website › html-navigation-barEverything You Need to Know about HTML Navigation Bars (+Code)

    blog.hubspot.com › website › html-navigation-bar

    • Cached

    Dec 12, 2023 · HTML navigation bars are like the signposts and roadmaps of a website. They're the menus or lists of links you often see at the top or side of a webpage, guiding you to different parts of the site. A well-designed navigation bar is like a well-organized bookshelf in a library.