4.2 Inline, Internal, and External CSS

External CSS

With an external style sheet, you can change the look of an entire website by changing just one file!
Each HTML page must include a reference to the external style sheet file inside the <link> element, inside the head section.
An external style sheet can be written in any text editor, and must be saved with a .css extension. The external .css file should not contain any HTML tags.
<!DOCTYPE html> <html> <head> <title>External CSS</title> <meta charset="utf-8"> </head> <body> <body> <p>Here's some text that should be blue</p> <body> </html>
/* makes all the paragraph text blue */ p { color: blue; }

Internal CSS

An internal style sheet may be used if one single HTML page has a unique style. The internal style is defined inside the <style> element, inside the head section.
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Internal CSS</title> <style> p
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Inline CSS

An inline style may be used to apply a unique style for a single element. To use inline styles, add the style attribute to the relevant element. The style attribute can contain any CSS property.
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4.1 CSS Basics
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