Top 250 CSS Interview Questions and Answers

CSS elements are the building blocks of Cascading Style Sheets that define the appearance of HTML elements.

• CSS elements are used to style HTML elements

• They include selectors, properties, and values

• Selectors target specific HTML elements, while proper...read more

margin-left and margin-top in CSS of fixed layout are used to define the distance between the left and top edges of an element and its containing element.

• margin-left sets the left margin of an element

• margin-top sets the top margin of an element

• These ...read more

CSS positions include static, relative, absolute, fixed, and sticky.

• Static - default position, elements are positioned according to the normal flow of the document

• Relative - positioned relative to its normal position

• Absolute - positioned relative to ...read more

Pseudo elements/children are CSS selectors that target specific parts of an element.

• Pseudo elements are denoted by a double colon (::) and are used to style a specific part of an element, such as the first letter or line of text.

• Pseudo children are d...read more

To center a div using CSS, set the left and right margins to auto and specify a width for the div.

• Set margin-left and margin-right to auto

• Specify a width for the div

• Use display: block to ensure the div takes up the full width

Object fit in CSS is a property that specifies how an image or video should be resized to fit its container.

• Specifies how the content of an element should be resized to fit its container

• Values include 'fill', 'contain', 'cover', 'none', 'scale-down'

• E...read more

SASS is an older syntax of SCSS, which is a newer and more popular syntax of Sass.

• SASS uses indentation for nesting, while SCSS uses braces.

• SCSS is more similar to CSS syntax, making it easier for beginners to learn.

• SCSS supports inline comments, whi...read more

The CSS position property defines the positioning method of an element.

• Static: Default position, elements are positioned according to the normal flow of the document.

• Relative: Positioned relative to its normal position.

• Absolute: Positioned relative t...read more

To add a background image, use CSS background-image property.

• Create a CSS class or ID for the element you want to add the background image to.

• Use the background-image property to specify the URL of the image.

• Set the background-size property to cover ...read more

box-sizing: border-box is a CSS property that includes padding and border in the element's total width and height.

• It changes the box model so that padding and border are included in the element's total width and height

• Helps in easier layout design as...read more

Specificity rules in CSS determine which styles are applied to an element when multiple conflicting styles are present.

• Specificity is calculated based on the type of selector used (ID, class, element) and the number of each type of selector.

• ID select...read more

There are multiple ways to display HTML elements, including inline, block, inline-block, and flex.

• Inline elements flow in a line with other elements and do not start on a new line. Example: <span>

• Block elements start on a new line and take up the ful...read more

Design a yin yang using css

• Create a circle using border-radius property

• Use background-color to fill the circle with black and white

• Create two smaller circles inside the main circle using absolute positioning

• Use transform property to rotate the smalle...read more

Optimizing CSS involves reducing file size, minimizing HTTP requests, and using efficient selectors.

• Minimize use of unnecessary CSS rules

• Combine and minify CSS files

• Use efficient selectors

• Reduce file size by removing comments and whitespace

• Avoid usin...read more

CSS is a styling language used to design web pages, while Bootstrap is a front-end framework that helps in building responsive and mobile-first websites.

• CSS is a styling language used to control the look and feel of a website.

• Bootstrap is a front-end...read more

Pseudo code in CSS is a way to plan out the structure and logic of your CSS code without actually writing any CSS syntax.

• Pseudo code helps in organizing and visualizing the layout of your CSS styles before implementation.

• It can include comments, plac...read more

CSS accessibilities refer to making web content accessible to users with disabilities.

• Using proper color contrast for text and background

• Providing alternative text for images using the 'alt' attribute

• Using semantic HTML elements for better screen rea...read more

CSS box model is a design concept that describes how elements are rendered on a web page.

• The CSS box model consists of four main components: content, padding, border, and margin.

• The content area is where the actual content of the element is displayed...read more

CSS has multiple versions, the latest being CSS3.

• CSS1 was released in 1996

• CSS2 was released in 1998

• CSS3 is the latest version

• CSS3 has many new features like animations, transitions, and flexbox

Use CSS to create a spiral design

• Use CSS properties like transform, rotate, and scale to create the spiral effect

• Consider using keyframes for animation effects

• Experiment with different shapes and sizes to achieve the desired spiral design

Flexbox is a one-dimensional layout while Grid is a two-dimensional layout.

• Flexbox is best for arranging items in a single row or column

• Grid is best for arranging items in rows and columns

• Flexbox has a main axis and a cross axis

• Grid has rows and colu...read more

Pseudo elements in CSS are used to style specific parts of an element, like the first letter or line.

• Pseudo elements are denoted by :: before the element name, like ::before or ::after.

• They can be used to add decorative elements, like inserting conte...read more

There are three ways to link CSS: inline, internal, and external. Inline has the highest priority.

• Inline CSS is applied directly to an HTML element using the 'style' attribute.

• Internal CSS is defined within the 'style' tags in the head section of an ...read more

SASS is compiled using a command line tool or a build system.

• SASS is compiled into CSS using a preprocessor.

• The compilation process involves converting SASS code into CSS code.

• There are several ways to compile SASS, such as using the command line too...read more

A CSS compiler is a tool that converts CSS code into a more efficient format, such as minified or optimized CSS.

• CSS compilers help streamline the development process by automatically processing and optimizing CSS code.

• Popular CSS compilers include Sa...read more

Use the :nth-child() pseudo-class in CSS to target even elements.

• Use :nth-child(2n) to target every even element in a list.

• For example, to target even

• elements in a
  , use ul li:nth-child(2n).

Webkit is a rendering engine used by browsers to display web pages and is used for CSS3 animations and transitions.

• Webkit is a layout engine used by Safari, Chrome, and other browsers.

• It is used for CSS3 animations and transitions.

• Webkit is responsib...read more