Using responsive CSS frameworks developers can speed up the delivery and improve the quality of responsive CSS code. Since responsive web design is in high demand a lot of frameworks have been created to streamline the delivery of high quality mobile-ready websites.
Sometimes we need to format the content differently according to the screen resolution of the user. One of the ways to do this is to simply detect the screen width using the screen.width property and change the stylesheet.
The CSS3 border-radius property allows web developers to easily utilise rounder corners in their design elements, without the need for corner images or the use of multiple div tags, and is perhaps one of the most talked about aspects of CSS3.
Often we think of using some class or id within a CSS but later on decide not to use them finally. But several times we forget to delete those classes from the CSS file. This may not be a problem for sites where the use of CSS is very less. But this may be accountable for much junk lines within your CSS which are unnecessary and unwanted.