CSS Interview Questions

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In this article we will discuss about CSS Interview Questions. I will display 10 most common CSS Interview Questions.

1. What is CSS and what is its purpose?

CSS means Cascading Style Sheet. The purpose of CSS is to separate the presentation of a web page from its content, allowing web designers to control the layout, formatting, and appearance of the content.

2. What is the difference between inline, internal, and external styles in CSS?

Inline styles are styles that are applied directly to an HTML element using the style attribute. Internal styles are styles that are defined within the head section of an HTML document using the style tag. External styles are styles that are defined in a separate CSS file and linked to the HTML document using the link tag.

3. What is the box model in CSS?

The box model is a layout concept in CSS that describes how elements are rendered on a web page. Each HTML element is represented as a rectangular box, consisting of the content, padding, border, and margin. The content is the actual content of the element, while the padding is the space between the content and the border. The border is a line around the element, and the margin is the space between the border and adjacent elements.

4. What is the difference between margin and padding in CSS?

Margin is used to create space outside of an element’s border. It determines the amount of space between an element and other elements in the layout. Margins can be set for each side of the element (top, right, bottom, and left).

Padding is used to create space between an element’s content and its border. It determines the amount of space between the content and the element’s border. Padding can also be set for each side of the element.

5. What is a CSS selector?

A CSS selector is a pattern that is used to select one or more HTML elements that will be styled with a set of CSS rules. CSS selectors can be based on element names, attributes, class names, and IDs.

6. What is the difference between a class and an ID in CSS?

A class is a selector that can be used to apply a set of CSS rules to multiple elements on a web page, while an ID is a selector that can be used to apply a set of CSS rules to a single element on a web page. IDs must be unique, while classes can be used multiple times on the same page.

7. What is the CSS display property used for?

The CSS display property is used to specify how an HTML element should be displayed on a web page. The display property can be set to values such as block, inline, and inline-block, which control how the element is positioned on the page and how it interacts with other elements.

8. What is the CSS float property used for?

The CSS float property is used to specify how an element should be positioned in relation to the surrounding content. When an element is floated, it is moved to the left or right of its normal position, allowing other content to flow around it.

9. What is a CSS pseudo-class?

A CSS pseudo-class is a keyword that is added to a CSS selector to style an element when it is in a certain state or condition. For example, the :hover pseudo-class can be used to apply a set of CSS rules to an element when the user hovers over it with the mouse.

10. What is responsive design in CSS?

Responsive design is a design approach in CSS that allows a web page to adapt to different screen sizes and devices, providing an optimal viewing experience for users on desktops, tablets, and smartphones. Responsive design is achieved through the use of flexible layouts, responsive images, and media queries, which allow the page to adjust its layout and content based on the size and orientation of the screen.

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