CSS Final Interview Questions

Post your answers to the questions let’s see who will give all answers correct.

1.What is the purpose of the z-index and how is it used?
2.What is the difference between CSS2 and CSS3?
3.What is RWD?
4.What is the use of CSS Opacity?
5.Is it possible to change the color of the bullet?
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1.What is the purpose of the z-index and how is it used?
Z Index ( z-index ) is a CSS property that defines the order of overlapping HTML elements. Elements with a higher index will be placed on top of elements with a lower index.

Note: Z index only works on positioned elements (position:absolute, position:relative or position:fixed).

2.What is the difference between CSS2 and CSS3?

CSS: CSS stands for Cascading Style Sheet. Its main objective is to provide styling and fashion to the web page. CSS provides color, layout, background, font, and border properties. CSS features allow better content accessibility, enhanced flexibility, and control, as well as the specification of the characteristics of presentation.

CSS3: CSS3 stands for Cascading Style Sheet level 3, which is the advanced version of CSS. It is used for structuring, styling, and formatting web pages. Several new features have been added to CSS3 and it is supported by all modern web browsers. The most important feature of CSS3 is the splitting of CSS standards into separate modules that are simpler to learn and use.
he latest version of CSS is CSS3.

Multiple new properties have been added like border-radius, shadow effects, opacity, box model, 2D/3D transformations.

There are seven major things that differentiate CSS3 from its CSS2:

  1. Mobile-first mentality - using media queries
  2. Module-based code
  3. Web font support gives designers access to way more than just “web safe” fonts
  4. It enables faster development, and faster load times
  5. Create 2D and 3D transformations, animations, and transitions
  6. New colors and image effects
  7. Box-sizing has fixed some annoying alignment problems.

3.What is RWD?

RWD stands for “responsive web design.” It is a design approach that aims to create websites that are optimized for viewing on any device, regardless of screen size or resolution. Responsive web design uses a combination of flexible layouts, grids, and images to ensure that the website looks and functions well on all devices.

Responsive web design is important because it allows users to have a consistent and enjoyable experience when accessing a website from different devices, such as desktop computers, tablets, and smartphones. With the increasing use of mobile devices to access the internet, it is important for websites to be designed with responsive web design to ensure that they are accessible and easy to use on all devices.

4.What is the use of CSS Opacity?

The opacity property sets the opacity level for an element.

The opacity-level describes the transparency-level, where 1 is not transparent at all, 0.5 is 50% see-through, and 0 is completely transparent.

Note: When using the opacity property to add transparency to the background of an element, all of its child elements become transparent as well. This can make the text inside a fully transparent element hard to read. If you do not want to apply opacity to child elements, use RGBA color values instead of.

5.Is it possible to change the color of the bullet?
Yes

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