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CSS Interview Questions – DEV Community


Hey Readers, hope you all are good and doing nice. In right now’s world of tech, it isn’t straightforward to land a job whereas it is unimaginable to know solutions to all questions that an interviewer might ask you, however you may really feel extra assured when you have recognized to a few of these sort of questions.

Individuals do not know of what sort of questions ought to they anticipate after they apply for a Job. ๐Ÿคทโ€โ™‚๏ธ On this article, I will be sharing some regularly requested CSS questions. These are those which might be requested in numerous interviews from many alternative builders and programmers at totally different ranges. ๐Ÿ˜€

Earlier than we go, I allow you to remind that Cascading Stylesheet Sheet is a stylesheet language that determines how the weather and content material ought to look on the web page. CSS is used to develop a constant feel and look to the webpage. ๐Ÿ˜‰



Right here is the checklist of essentially the most regularly requested CSS interview questions



What are some great benefits of utilizing CSS?

The principle benefits of utilizing CSS are the next:

  • CSS supplies a technique to current the identical content material in a number of displays codecs on cell, desktop, or laptop computer.
  • Used successfully, the fashion sheet will probably be saved within the browser cache they usually can be utilized on a number of pages, with out having to obtain once more.
  • CSS is constructed successfully such that it may be used to vary the appear and feel utterly by making small modifications. To make a world change, merely change the fashion, and all parts in all internet pages will probably be robotically up to date.



What have you learnt about CSS sprites?

A sprite is a group of many pictures put right into a single picture file for use in a webpage, these are used as a result of a webpage with too many pictures might take too lengthy to load because it generates a number of server requests.

Utilizing picture sprites we are able to cut back the variety of server requests and save bandwidth.



What’s Field Mannequin in CSS? Which properties are part of it?

That is essentially the most primary and most frequent query requested a number of instances in a number of interviews, it is best to know.

CSS attracts containers in the course of the structure course of. All the pieces in CSS has a field round it, this is called the field mannequin. Every field is made up of 4 areas that are content material, padding, border, margin.

That is how a field mannequin appears like:
image.png

  • ๐—–๐—ผ๐—ป๐˜๐—ฒ๐—ป๐˜: The content material space comprises simply that: the content material! For instance: a textual content component’s content material space can be the textual content content material.
  • ๐—ฃ๐—ฎ๐—ฑ๐—ฑ๐—ถ๐—ป๐—ด: Padding space is the quantity of empty house between its content material and its border. This may be modified simply by altering the component’s padding, utilizing the padding-left, padding-right, padding-top, padding-bottom properties or by utilizing the shorthand property which is extra widespread padding: prime, proper, backside, left of their respective models)
  • ๐—•๐—ผ๐—ฟ๐—ฑ๐—ฒ๐—ฟ: Space surrounding the padding. We are able to change a componentโ€™s border utilizing the border-width, border-style, and border-color properties, or the shorthand property border.
  • ๐— ๐—ฎ๐—ฟ๐—ด๐—ถ๐—ป: That is the outermost space of the field mannequin. Just like the others, we are able to additionally change the margin measurement.



What are the restrictions of utilizing CSS?

Primary Disadvantages with CSS are:

  • ๐—•๐—ฟ๐—ผ๐˜„๐˜€๐—ฒ๐—ฟ ๐—ฐ๐—ผ๐—บ๐—ฝ๐—ฎ๐˜๐—ถ๐—ฏ๐—ถ๐—น๐—ถ๐˜๐˜† ๐—ถ๐˜€๐˜€๐˜‚๐—ฒ๐˜€ – Some fashion selectors aren’t supported in many aged browsers. We’ve got to find out whether or not the fashion we’re utilizing is supported or not utilizing the @assist selector.
  • ๐—ก๐—ผ ๐—ฝ๐—ฎ๐—ฟ๐—ฒ๐—ป๐˜ ๐˜€๐—ฒ๐—น๐—ฒ๐—ฐ๐˜๐—ผ๐—ฟ – Presently utilizing CSS, you may’t choose a mother or father.
  • ๐—–๐—ฟ๐—ผ๐˜€๐˜€ ๐—•๐—ฟ๐—ผ๐˜„๐˜€๐—ฒ๐—ฟ ๐—ถ๐˜€๐˜€๐˜‚๐—ฒ๐˜€ – Among the selectors behave in a different way in numerous browsers.



What are CSS preprocessors? What are Sass, Much less, and Stylus? Why do individuals use them?

CSS preprocessors are the instruments that assist us to increase the essential performance of the default CSS by way of their very own scripting language. This helps us to make use of complicated logic syntax like – capabilities, mixins, code nesting, inheritance to call just a few in your default vanilla CSS.

SASS stands for Syntactically Superior Type Sheet. SASS could be written in two totally different syntaxes utilizing SASS or SCSS.

SASS Syntax:

$font-color: #ffe41e 
$bg-color: #00f

#field
    shade: $font-color
    background: $bg-color
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SCSS Syntax

$font-color: #ffe41e;
$bg-color: #fcba03;

#field{
    shade: $font-color;
    background: $bg-color;
}

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  • ๐—ฆ๐—”๐—ฆ๐—ฆ makes use of .sass whereas ๐—ฆ๐—–๐—ฆ๐—ฆ makes use of .scss extension.
  • ๐—ฆ๐—”๐—ฆ๐—ฆ would not use curly braces or semicolons whereas ๐—ฆ๐—–๐—ฆ๐—ฆ makes use of these, similar to CSS.

๐—Ÿ๐—˜๐—ฆ๐—ฆ: much less stands for Leaner Stylesheets. LESS is straightforward so as to add to any JavaScript venture by utilizing NPM or much less.js file. This file makes use of .much less extension.

๐—Ÿ๐—˜๐—ฆ๐—ฆ syntaxis the identical because the SCSS with some exceptions. LESS makes use of @ to outline the variable.

@font-color: #ffe41e;
@bg-color: #fcba03

#field{
    shade: @font-color;
    background: @bg-color;
}
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Exit fullscreen mode

Stylus: Stylus provides an awesome flexibility in writing syntax, helps native CSS in addition to permits omission of brackets, colons, and semicolons. It doesnโ€™t use @ or $ for outlining variables.

/* STYLUS SYNTAX WRITTEN LIKE NATIVE CSS */
font-color= #ffe41e;
bg-color = #fcba03;

#field {
    shade: font-color;
    background: bg-color;
}

/* OR */

/* STYLUS SYNTAX WITHOUT CURLY BRACES */
font-color= #ffe41e;
bg-color = #fcba03;

#field
    shade: font-color;
    background: bg-color;
Enter fullscreen mode

Exit fullscreen mode



Is it necessary to check the webpage in numerous browsers?

It is most necessary to check a web site in numerous browsers if you’re first designing it, or making main modifications.

Nevertheless, it is also necessary to repeat these exams periodically, since browsers undergo lots of updates and modifications, and we all know that a number of the CSS properties don’t assist in lots of browsers.



What’s viewport peak and viewport width in CSS?

It is used to measure the peak and width in share regarding the viewport.

If the peak of the browser is the same as 1000px, 1vh is the same as 10px, comparable for the width.



Distinction between reset vs normalize CSS? How do they differ?

๐—ฅ๐—ฒ๐˜€๐—ฒ๐˜ ๐—–๐—ฆ๐—ฆ – CSS reset goals to take away all built-in browser styling. For instance, paddings, margin, font-size of all parts again to the identical.
๐—ก๐—ผ๐—ฟ๐—ป๐—ฎ๐—น๐—ถ๐˜‡๐—ฒ ๐—–๐—ฆ๐—ฆ – goals to make built-in browser styling constant throughout browsers. It additionally corrects bugs for widespread browser dependencies.


โš  You can even modify solutions as per your comfort, it isn’t really helpful to cram these ones. Additionally, this text doesn’t declare that you can find the very same questions in your interview.

It’s very alright to really feel pressured in interviews and everybody does, however simply be your self, you’ll gonna make it.

Additionally, a extra necessary factor is that there is no such thing as a one who is aware of all of the solutions and all frameworks of a language. So do not be shy to say no in regards to the factor you do not know. This is not going to take your picture down, however in case you attempt to body one thing that you do not know about, then there’s a risk that the interviewer will caught you. ๐Ÿ˜… I am saying once more….simply be your self.

Okay! It is wrap-up time, that is just about for this weblog. I am getting late for an necessary assembly, see you within the subsequent one.




Conclusion

  • We’ve got lined a number of the regularly requested interview questions.
  • If you happen to discover this convenient, then please let me know within the feedback under, and contemplate sharing it along with your viewers.
  • Extra blogs associated to this are about to return, comply with @Priyanshu to remain tuned. ๐Ÿ˜‰
  • Additionally, You may Be part of me on ๐Ÿฆ Twitter, the place I tweet extra regularly about Suggestions and Assets for internet builders.
  • Good luck to your interview. ๐Ÿ‘
  • Thanks for Studying. ๐Ÿ˜Š

You may lengthen your Assist by Shopping for me a espresso right here.๐ŸŒด
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Printed on: 03/20/2022.



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