CSS: Cascading Style Sheets
The reason for using this is to simplify the process of making web pages presentable. It allows you to apply styles on web pages

1)INLINE CSS:
Inline CSS contains the CSS property in the body section attached with the element known as inline CSS.
<!DOCTYPE html> <html> <body>
<h1 style="color:pink">Hello everyone!</h1>
</body> </html>
2)INTERNAL CSS:
this type of styling takes place within the <style> element, inside the head section.
<!DOCTYPE html> <html>
<head> <title> Simple webpage </title>
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<!-- Stylesheet of web page --> <style> body { text-align: center; }
h1 {
color: green;
}
</style>
</head>
<body> <h1>Welcome to web development </h1>