Css Interview Questions And Answers

Css Interview Questions list for experienced

  1. What is CSS ?
  2. What is the origin of CSS ?
  3. What are the different variations of CSS ?
  4. What are the limitations of CSS ?
  5. What are the advantages of CSS ?
  6. What are CSS frameworks?
  7. How block elements can be centered with CSS1?
  8. In how many ways can a CSS be integrated as a web page?
  9. What benefits and demerits do External Style Sheets have?
  10. Discuss the merits and demerits of Embedded Style Sheets?
  11. What does CSS selector mean?
  12. Enlist the media types CSS allows?
  13. Differentiate logical tags from physical tags?
  14. Differentiate Style Sheet concept from HTML?
  15. Describe 'ruleset'?
  16. Comment on the Case-sensitivity of CSS ?
  17. Define Declaration block?
  18. Enlist the various fonts' attributes?
  19. Why is it easy to insert a file by importing it?
  20. What is the usage of Class selector?
  21. Differentiate Class selector from ID selector?
  22. What is Pseudo-elements ?
  23. What happens if 100% width is used along with floats all across the page?
  24. Enlist the various Media types used?
  25. What is CSS Box Model and what are its elements?
  26. What is contextual selector?
  27. Compare RGB values with Hexadecimal color codes ?
  28. Define Image sprites with context to CSS ?
  29. Compare Grouping and Nesting in CSS ?
  30. How can the dimension be defined of an element ?
  31. Define float property of CSS?
  32. How does Z index function?
  33. What is graceful degradation?
  34. What is progressive enhancement?
  35. How can backward compatibility be designed in CSS?
  36. How can the gap under the image be removed?
  37. What is Alternate Style Sheet?
  38. CSS rule to disable text selection highlighting?
  39. How to vertically center a div for all browsers?
  40. How to apply CSS to iframe?
  41. How do you get the footer to stay at the bottom of a Web page?
  42. List out the advantages of using CSS
  43. When CSS was released?
  44. Who developed CSS?
  45. What are the different types of Selectors in CSS?
  46. What is VH/VW (viewport height/ viewport width) in CSS?
  47. Difference between reset vs normalize CSS?. How do they differ?
  48. What is the difference between inline, inline-block, and block?
  49. How do you test the webpage in different browsers?
  50. How do you specify units in the CSS?. What are the different ways to do it?
  51. What does DOM reflow occur?
  52. Different Box Sizing Property?
  53. Can you name the four types of @media properties?
  54. What does Accessibility (a11y) mean?
  55. What does important mean in CSS?
  56. Distinguish between CSS2 and CSS3.
  57. Why is the external style sheet useful?
  58. Explain the term Responsive web design.
  59. What is CSS specificity?

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Top Css interview questions and answers for freshers and experienced

What is Css ?

Answer : CSS (Cascading Style Sheets) is a style sheet language used for describing the look and formatting of HTML(Hyper Text Markup Language) and XML(Extensible Markup Language) documents including (but not limited to) colors, layout, and fonts

Questions : 1 :: What is CSS ?

The full form of CSS is Cascading Style Sheets. It is a styling language which is simple enough for HTML elements. It is popular in web designing, and its application is common in XHTML...View answers

Questions : 2 :: What is the origin of CSS ?

Standard Generalized Markup Language marked the beginning of style sheets in...View answers

Questions : 3 :: What are the different variations of CSS ?


=>CSS 1 =>CSS 2 =>CSS 2.1 =>CSS 3 =>CSS...View answers

Questions : 4 :: What are the limitations of CSS ?

Limitations are: *Ascending by selectors is not possible*Limitations of vertical control*No expressions*No column declaration*Pseudo-class not controlled by dynamic behavior*Rules, styles,...View answers

Questions : 5 :: What are the advantages of CSS ?

Advantages are: *Bandwidth*Site-wide consistency*Page reformatting*Accessibility*Content separated from presentation

Questions : 6 :: What are CSS frameworks?


It is a pre-planned libraries, which allows easier and more standards-compliant webpage styling, using CSS...View answers

Questions : 7 :: How block elements can be centered with CSS1?

Block level elements can be centered by: The margin-left and margin-right properties can be set to some explicit value: BODY { width: 40em; background: fluorescent; } P { width: 30em;...View answers

Questions : 8 :: In how many ways can a CSS be integrated as a web page?

CSS can be integrated in three ways: Inline: Style attribute can be used to have CSS applied HTML elements. Embedded: The Head element can have a Style element within which the code can...View answers

Questions : 9 :: What benefits and demerits do External Style Sheets have?


Benefits: One file can be used to control multiple documents having different styles.Multiple HTML elements can have many documents, which can have classes.To group styles in composite...View answers

Questions : 10 :: Discuss the merits and demerits of Embedded Style Sheets?

Merits of Embedded Style Sheets: Multiple tag types can be created in a single document.Styles, in complex situations, can be applied by using Selector and Grouping methods.Extra download is...View answers

Questions : 11 :: What does CSS selector mean?

A string equivalent of HTML elements by which declarations or a set of it, is declared and is a link that can be referred for linking HTML and Style sheet is CSS...View answers

Questions : 12 :: Enlist the media types CSS allows?

The design and customization of documents are rendered by media. By applying media control over the external style sheets, they can be retrieved and used by loading it from the...View answers

Questions : 13 :: Differentiate logical tags from physical tags?

=>While physical tags are also referred to as presentational mark-up, logical tags are useless for appearances.=>Physical tags are newer versions while logical tags are old and concentrate on...View answers

Questions : 14 :: Differentiate Style Sheet concept from HTML?

While HTML provides easy structure method, it lacks styling, unlike Style sheets. Moreover, style sheets have better browser capabilities and formatting...View answers

Questions : 15 :: Describe 'ruleset'?

Ruleset : Selectors can be attached to other selectors to be identified by ruleset. It has two parts: *Selector, e.g. R and*declaration {text-indent: 11pt}

Questions : 16 :: Comment on the Case-sensitivity of CSS ?

Although, there are no case-sensitivity of CSS, nevertheless font families, URL’s of images, etc is. Only when XML declarations along with XHTML DOCTYPE are being used on...View answers

Questions : 17 :: Define Declaration block?

A catalog of directions within braces consisting of property, colon and value is called declaration block.e.g.: [property 1: value...View answers

Questions : 18 :: Enlist the various fonts' attributes?

They are: *Font-style*Font-variant*Font-weight*Font-size/line-height*Font-family*Caption*Icon

Questions : 19 :: Why is it easy to insert a file by importing it?

Importing enables combining external sheets to be inserted in many sheets. Different files and sheets can be used to have different functions. Syntax: @import notation, used with...View answers

Questions : 20 :: What is the usage of Class selector?

Selectors that are unique to a specific style, are called CLASS selectors. Declaration of style and association with HTML can be made through this. Syntax: Classnameit can be A-Z, a-z or...View answers

Questions : 21 :: Differentiate Class selector from ID selector?

While an overall block is given to class selector, ID selector prefers only a single element differing   from other...View answers

Questions : 22 :: What is Pseudo-elements ?

Pseudo-elements are used to add special effects to some selectors.  CSS in used to apply styles in HTML mark-up. In some cases when extra mark-up or styling is not possible for the...View answers

Questions : 23 :: What happens if 100% width is used along with floats all across the page?

While making the float declaration, 1 pixel is added every time it is used in the form of the border, and   even more float is allowed...View answers

Questions : 24 :: Enlist the various Media types used?

Different media has different properties as they are case insensitive. They are: *Aural – for sound synthesizers and speech*Print – gives a preview of the content when...View answers

Questions : 25 :: What is CSS Box Model and what are its elements?

This box defines design and layout of elements of CSS. The elements are: Margin: the top most layer, the overall structure is shownBorder: the padding and content option with a border...View answers

Questions : 26 :: What is contextual selector?

Selector used to select special occurrences of an element is called contextual selector. A space separates the individual selectors. Only the last element of the pattern is addressed in...View answers

Questions : 27 :: Compare RGB values with Hexadecimal color codes ?

A color can be specified in two ways: *A color is represented by 6 characters i.e. hexadecimal color coding. It is a combination of numbers and letters and is preceded by #. e.g.: g {color:...View answers

Questions : 28 :: Define Image sprites with context to CSS ?

When a set of images is collaborated into one image, it is known as ‘Image Sprites’. As the loading every image on a webpage consumes time, using image sprites lessens the time...View answers

Questions : 29 :: Compare Grouping and Nesting in CSS ?

Grouping:  Selectors can be grouped having the same values of property and the code be reduced. h1 { color: blue; } h2 { color: blue; } p { color: blue; } It can be seen...View answers

Questions : 30 :: How can the dimension be defined of an element ?

Dimension properties can be defined by: *Height*Max-height*Max-width*Min-height*Min-width*Width

Questions : 31 :: Define float property of CSS?

By float property, the image can be moved to the right or the left along with the text to be wrapped around it. Elements before this property is applied do not change their...View answers

Questions : 32 :: How does Z index function?

Overlapping may occur while using CSS for positioning HTML elements. Z index helps in specifying the overlapping element. It is a number which can be positive or negative, the default value...View answers

Questions : 33 :: What is graceful degradation?

In case the component fails, it will continue to work properly in the presence of a graceful degradation. The latest browser application is used when a webpage is designed. As it is not...View answers

Questions : 34 :: What is progressive enhancement?

It’s an alternative to graceful degradation, which concentrates on the matter of the web. The functionality is same, but it provides an extra edge to users having the latest...View answers

Questions : 35 :: How can backward compatibility be designed in CSS?

HTML sheet methods is collaborated with CSS and used...View answers

Questions : 36 :: How can the gap under the image be removed?

As images being inline elements are treated same as texts, so there is a gap left, which can be   removed by: CSS img { display: block ;...View answers

Questions : 37 :: What is Alternate Style Sheet?

Alternate Style Sheets allows the user to select the style in which the page is displayed using the view>page style menu. Through Alternate Style Sheet, user can see a multiple version...View answers

Questions : 38 :: CSS rule to disable text selection highlighting?

All of the correct CSS variations are:.noselect { -webkit-touch-callout: none; -webkit-user-select: none; -khtml-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select:...View answers

Questions : 39 :: How to vertically center a div for all browsers?

Below is the best all-around solution build to vertically & horizontally center a fixed-width, flexible height content box. Tested and working for recent versions of FF, Opera, Chrome, &...View answers

Questions : 40 :: How to apply CSS to iframe?

There are two different things here: the style of the iframe block and the style of the page embedded in the iframe. You can set the style of the iframe block the usual way: <iframe...View answers

Questions : 41 :: How do you get the footer to stay at the bottom of a Web page?

Sticky footer on Google: Have a <div> with class="wrapper" for your content. Right before the closing </div> of the wrapper place the <div class="push"></div>. Right...View answers

Questions : 42 :: List out the advantages of using CSS

Advantages of CSS: Easier to maintain and update. Greater consistency in design. More formatting options. Lightweight...View answers

Questions : 43 :: When CSS was released?

 It was released on December 17, 1996; 24 years ago A short history of CSS until 2016. [Much of this content showed up before as section 20 of the book Cascading Style Sheets –...View answers

Questions : 44 :: Who developed CSS?

Håkon Wium Lie; Bert Bos; World Wide Web Consortium.   CSS stands for Cascading Style Sheets CSS describes how HTML elements are to be displayed on screen,...View answers

Questions : 45 :: What are the different types of Selectors in CSS?

A CSS selector is the part of a CSS ruleset that actually selects the content you want to style. Different types of selectors are listed below. Universal Selector: The universal selector works...View answers

Questions : 46 :: What is VH/VW (viewport height/ viewport width) in CSS?

It’s a CSS unit used to measure the height and width in percentage with respect to the viewport. It is used mainly in responsive design techniques. The measure VH is equal to 1/100 of the...View answers

Questions : 47 :: Difference between reset vs normalize CSS?. How do they differ?

Reset CSS: CSS resets aim to remove all built-in browser styling. For example margins, paddings, font-sizes of all elements are reset to be the same.  Normalize CSS: Normalize CSS aims to make...View answers

Questions : 48 :: What is the difference between inline, inline-block, and block?

Block Element: The block elements always start on a new line. They will also take space for an entire row or width. List of block elements are <div>, <p>. Inline...View answers

Questions : 49 :: How do you test the webpage in different browsers?

It’s most important to test a website in different browsers when you’re first designing it, or when making major changes. However, it’s also important to repeat these tests...View answers

Questions : 50 :: How do you specify units in the CSS?. What are the different ways to do it?

There are different ways to specify units in CSS like px, em, pt, percentage (%). px(Pixel) gives fine-grained control and maintains alignment because 1 px or multiple of 1 px is guaranteed to look...View answers

Questions : 51 :: What does DOM reflow occur?

Reflow is the name of the web browser process for re-calculating the positions and geometries of elements in the document, for the purpose of re-rendering part or all of the document.  Reflow...View answers

Questions : 52 :: Different Box Sizing Property?

The box-sizing CSS property sets how the total width and height of an element are calculated. Content-box: The default width and height values apply to the element's content only. The padding...View answers

Questions : 53 :: Can you name the four types of @media properties?

The four types of @media properties are: All → It’s the default property. Used for all media-type devices. Screen → Used for computer screen, mobile screen. Print → Used for...View answers

Questions : 54 :: What does Accessibility (a11y) mean?

Accessibility refers to how software or hardware combinations are designed to make a system accessible to persons with disabilities, such as visual impairment, hearing loss, or limited...View answers

Questions : 55 :: What does important mean in CSS?

The style is having the important will have the highest precedence and it overrides the cascaded property.  p {   color: red !important;  }  #thing {   color:...View answers

Questions : 56 :: Distinguish between CSS2 and CSS3.

 The differences between CSS2 and CSS3 are as follows: CSS3 is divided into two various sections which are called a module. Whereas in CSS2 everything accedes into a single document with all...View answers

Questions : 57 :: Why is the external style sheet useful?

 External style sheet is very useful as we write all the styling codes in a single file and it can be used anywhere by just referring to the link of that external style sheet file. So, if we do...View answers

Questions : 58 :: Explain the term Responsive web design.

 It is a method in which we design and develop a web page according to the user activities and conditions which are based on various components like the size of the screen, portability of the...View answers

Questions : 59 :: What is CSS specificity?

CSS specificity is a score or rank that decides which style declaration has to be used to an element. (*) this universal selector has low specificity while ID selectors have high...View answers
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