CSS is the language we use to style a Web page.
What is CSS ?
• CSS stands for Cascading Style Sheets.
• CSS describes how HTML elements are to be displayed on screen, paper, or in other media.
• CSS saves a lot of work. It can control the layout of multiple web pages all at once
External stylesheets are stored in CSS files.
A CSS rule consists of a selector and a declaration block.
CSS Syntax

The selector points to the HTML element you want to style.
The declaration block contains one or more declarations separated by semicolons.
Each declaration includes a CSS property name and a value, separated by a colon.
Multiple CSS declarations are separated with semicolons, and declaration blocks are surrounded by curly braces.
Example :-
In this example all <p> elements will be center-aligned, with a red text color:
<!DOCTYPE html>
Write as simple Font. Just write the the colour that you want in the format.
<html>
<head>
<style>
p {
color: red;
text-align: center;
}
</style>
</head>
<body>
<p>Hello World!</p>
<p>These paragraphs are styled with CSS.</p>
</body<!DOCTYPE html>
<html>
<head>
<style>
p {
color: red;
text-align: center;
}
</style>
</head>
<body>
<p>Hello World!</p>
<p>These paragraphs are styled with CSS.</p>
</body>>
</html>
Example Explained :-
p is a selector in CSS (it points to the HTML element you want to style: <p>).
color is a property, and red is the property value
text-align is a property, and center is the property value