A CSS rule consists of a selector and a declaration block:

The selector points to the HTML element to style (h1).
The declaration block (in curly braces) contains one or more declarations separated by semicolons.
Each declaration includes a CSS property name and a value, separated by a colon.
In the following example all <p> elements will be center-aligned, red and have a font size of 32 pixels:
Course Overview
Every Web Developer must have a basic understanding of HTML, CSS, and JavaScript.Responsive Web Design is used in all types of modern web...
Discuss