What is CSS and its use
                     What is CSS and its use? 
CSS (Cascading Style Sheets) are used to style web pages that contain HTML elements. It controls the 
background colour, font-size, font-family, colour, and other properties of web page elements. 
 
There are three types of CSS which are given below: 
1.Inline CSS: 
Inline CSS is defined as the presence of a CSS property in the body section attached to an element. The style 
attribute is used to specify this type of style within an HTML tag. 
2.Internal or embedded CSS: 
This is useful when a single HTML document needs to be styled differently. The CSS rule set should be in the 
head section of the HTML file, i.e. the CSS is embedded within the HTML file. 
3.External CSS: 
External CSS is a separate CSS file that only contains style properties via tag attributes (for example, class, id, 
heading,... etc.). CSS properties should be written in a separate file with the.css extension and linked to the 
HTML document using the link tag. This means that the style can only be set once for each element and will be 
applied across web pages. 
Improve Skill with CSS Quiz- 
The CSS quiz contains multiple-choice questions (MCQs) about CSS. You must read each of the provided 
answers and choose the most accurate one. If you're not sure about the answer, click the Show Answer button to 
confirm it. Press the Next Quiz button to view a new set of quiz questions. 
 
What is the use of CSS? 
The styles for web pages are specified using CSS. It explains how a document that is authored in a markup 
language looks and is formatted. It gives HTML an additional feature. Typically, it works with HTML to modify 
the look and feel of online pages and user interfaces. 
Using CSS makes it simpler to present web pages. It may be used to manage how an HTML document is 
presented and is simple to learn and comprehend. CSS enables us to control a variety of elements, including text 
colour, font style, paragraph spacing, column sizing, layout patterns, and more. It can be used with any XML-
based markup language and is not dependant on HTML. 
The use of CSS is advised because HTML characteristics are being phased out. Therefore, it is wise to begin 
using CSS in HTML pages in order to make them compatible with future browsers. 
 
There are several uses of CSS that are discussed as follows: 
Solves a significant issue 
Before CSS, each web page required to have multiple instances of tags for font, colour, background style, 
element alignments, border, and size. This process took a very long time.It will take a while to create a huge 
website, for instance, if font and colour information must be added to each page. CSS was developed to address 
this issue. The W3C had recommended it. 
Spends a lot less time 
Since CSS style definitions are saved in external CSS files, altering a single file might alter the entire website. 
Give more characteristics 
CSS offers more specific properties than plain HTML to define the website's look and feel. 
Quicker page loading 
CSS doesn't always require writing HTML tag attributes. For each occurrence of a tag, a rule can be written 
only once and then applied to all instances of that tag. CSS reduces the amount of code, which speeds up 
downloading. 
Easier Website maintenance 
CSS makes it simpler to maintain a website. It is vital for maintaining websites. If we need to make a global 
change to the file, we may easily do so by altering the style, which will cause all the web page's parts to update 
themselves. The website's flexible appearance is provided by the CSS file, which may be easily modified. 
Additionally, it makes it simpler to format HTML and modify the necessary data elements. 
Multiple device compatibility 
Because CSS is backwards compatible with older language versions, we can utilise it with them. As a result, if 
the developer creates the CSS application using an earlier programming language version and merges it with 
recent advancements, CSS may be quickly implemented with the necessary adjustments, enabling the developer 
to successfully update the current code. Multiple types of device optimization are possible with CSS.