What is the viewport in CSS?

The viewport is the user’s visible area of a web page. The viewport varies with the device, and will be smaller on a mobile phone than on a computer screen. Before tablets and mobile phones, web pages were designed only for computer screens, and it was common for web pages to have a static design and a fixed size.

What is the viewport used for?

A viewport is a region of the screen used to display a portion of the total image to be shown. In virtual desktops, the viewport is the visible portion of a 2D area which is larger than the visualization device. In web browsers, the viewport is the visible portion of the entire document.

What is viewport width CSS?

clientWidth is the inner width of a document in CSS pixels, including padding (but not borders, margins, or vertical scrollbars, if present). This is the viewport width. The Window. innerWidth is the width, in CSS pixels, of the browser window viewport including, if rendered, the vertical scrollbar.

What is viewport tag?

Background. The browser’s viewport is the area of the window in which web content can be seen. This is often not the same size as the rendered page, in which case the browser provides scrollbars for the user to scroll around and access all the content.

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What is viewport height CSS?

Viewport Height (vh). This unit is based on the height of the viewport. A value of 1vh is equal to 1% of the viewport height. Viewport Width (vw). This unit is based on the width of the viewport.

What is my viewport?

The browser viewport is the size of the rectangle that a web page fills on your screen (or screens!). It’s basically the size of the browser window, less the toolbars and scrollbars. It’s the bit of the screen you’re actually using to show the webpage.

How do you use a viewport?

Use the viewport meta tag to improve the presentation of your web content. Typically, you use the viewport meta tag to set the width and initial scale of the viewport. For example, if your webpage is narrower than 980 pixels, then you should set the width of the viewport to fit your web content.

What is viewport width?

The viewport is a virtual area used by the browser rendering engine to determine how content is scaled and sized when it is initially rendered on the current screen. This will help you: <meta name=”viewport” content=”width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no” />

What is the use of EM in CSS?

Relative Lengths

Unit Description
em Relative to the font-size of the element (2em means 2 times the size of the current font) Try it
ex Relative to the x-height of the current font (rarely used) Try it
ch Relative to the width of the “0” (zero) Try it
rem Relative to font-size of the root element Try it
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How do I know my viewport width?

Try viewing the page in different browsers to see how each handles viewport size. Specifically, try it out in Internet Explorer 9, Firefox, Chrome for Windows, Safari for Windows, and Opera.

What size is your viewport width?

  1. window. innerWidth;
  2. documentElement. clientWidth;
  3. $(window). width();

How do I write meta keywords?

Guidelines for Using Meta Keywords Tags:

  1. Keep your list of keywords or keyword phrases down to ten or fifteen unique keywords or phrases.
  2. Separate the words or phrases using a comma.
  3. Do not repeat the words or phrases which you use.
  4. Place your most important words or phrases at the beginning of your list.

What is use of meta tag in HTML?

The <meta> tag defines metadata about an HTML document. … Metadata is used by browsers (how to display content or reload page), search engines (keywords), and other web services.

How do you use metadata?

Best Practices to Write Effective Metadata

  1. Keep it concise. Meta titles need to be short but sweet – Google typically displays the first 50–60 characters of a title tag. …
  2. Include the focus keyword. …
  3. Include a call-to-action. …
  4. Match the title & description to your content. …
  5. Make sure they’re unique.

What is height 100vh?

height: 100vh = 100% of the viewport height. height: 100% = 100% of the parent’s element height. That is why you need to add height: 100% on html and body , as they don’t have a size by default.

What Is REM in HTML?

To recap, the rem unit means “The root element’s font-size”.

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(rem stands for “root em”.) The <li> elements inside the <ul> with a class of rems take their sizing from the root element ( <html> ). This means that each successive level of nesting does not keep getting larger.

What is Z index?

The z-index property in CSS controls the vertical stacking order of elements that overlap. As in, which one appears as if it is physically closer to you. z-index only affects elements that have a position value other than static (the default).

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