3. What are the advantages of CSS?

CSS plays an important role, by using CSS you simply got to specify a repeated style for an element once & use it multiple times because CSS will automatically apply the required styles.
The main advantage of CSS is that style is applied consistently across a variety of sites. One instruction can control several areas which are advantageous.
Web designers need to use a few lines of programming for every page improving site speed.
Cascading sheet not only simplifies website development but also simplifies maintenance as a change of one line of code affects the whole website and maintenance time.
It is less complex therefore the effort is significantly reduced.
It helps to form spontaneous and consistent changes.
CSS changes are device friendly. With people employing a batch of various range of smart devices to access websites over the web, there’s a requirement for responsive web design.
It has the power for re-positioning. It helps us to determine the changes within the position of web elements that are there on the page.
These bandwidth savings are substantial figures of insignificant tags that are indistinct from a mess of pages.
Easy for the user to customize the online page
It reduces the file transfer size.