Web applications and websites are increasing in every industry, and CSS is essential to building attractive websites. There is a tremendous demand for web developers with a good knowledge of HTML and CSS.
Name some CSS frameworks.
CSS frameworks are libraries that make web page styling easier. Some examples are Foundation, Bootstrap, Gumby, Ukit, and Semantic UI.
Differentiate between CSS3 and CSS2
The main difference between CSS3 and CSS2 is that CSS divides different sections into modules and supports many browsers. It also contains new General Sibling Combinators responsible for matching similar elements.
How can CSS be integrated into an HTML page?
There are three ways of integrating CSS into HTML: using style tags in the head section, inline styling, writing CSS in a separate file, and linking to the HTML page by the link tag.
Explain a few advantages of CSS.
With CSS, different documents can be controlled using a single site, styles can be grouped in complex situations using selectors and grouping methods, and multiple HTML elements can have classes.
What is meant by RGB stream?
RGB represents colors in CSS. The three streams are namely Red, Green, and Blue. The intensity of colors is represented using numbers 0 to 256. This allows CSS to have a spectrum of visible colors.
What was the purpose of developing CSS?
CSS was developed to define websites' visual appearances. It allows developers to separate the structure and content of a website, which was not possible before.
What is the difference between a class and an ID?
Class is a way of using HTML elements for styling. It is not unique and has multiple elements, whereas ID is unique and can be assigned to a single element.
Define z-index.
This is one of the most frequently asked CSS interview questions. Z-index is used to specify the stack order of elements that overlap each other. Its default value is zero, and it can take both negative and positive values. A higher z-index value is stacked above the lower index element. It takes the following values- auto, number, initial, and inherit.
Explain responsive web design.
Responsive Design is a web page creation approach that uses flexible images, layouts, and CSS media queries. This design approach aims to build web pages that detect visitors' orientation and screen size so that the layout can be changed accordingly.
Tell us about the general CSS nomenclature.
In CSS, the styling commands are written in value and property fashion. CSS includes a system terminator—a semicolon. The entire style is wrapped in curly braces and attached to the selector. This creates a style sheet that can be applied to an HTML page.
What are the different types of Selectors in CSS?
Universal Selector, Element type Selector, ID selector, Class selector, Descendant combinatory, Child Combinator, General Sibling Combinator, Adjacent sibling combinator, and Attribute selector.
What is VH/VW (viewport height/ viewport width) in CSS?
VH and VW are CSS units used to measure viewport height and width, respectively, in percentage form in responsive design techniques. For example, if the browser's height is 1000px, then VH is 1/100 of the height of the viewport, which is 1000px*(1/100) = 10px, which is the browser's height. The same applies to VW (viewport width).
Is it important to test the webpage in different browsers?
Yes, it is the most crucial trial to do when you design a webpage and make changes to it for the first time. Testing your website periodically in different browsers will help you make every webpage compatible with it, as browsers have undergone many updates.
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