Cascading Styles Sheets

Where HTML describes the structure of a web resource, Cascading Style Sheets (CSS) describes how the content should appear.

CSS can be stored in three ways:

1. External CSS lives in its own document, which typically has the .css file extension. External CSS is most often used when we want to control the styling of our entire website; most of the CSS used for a large site would be external.
2. Internal CSS is used within a given HTML page, and usually takes care of styling one specific page, which we might want to have a different appearance and feel to the rest of our site. Internal CSS is defined via the <style> HTML tag.
3. Inline CSS is the most granular option, because it can be used to modify a specific HTML element. The style attribute can be added to any tag to specify its style. For example, we might want the title of a section of text to be red. To do so, we could use the element: <p style=color:red;>Offensive Security</p>, which will modify the inline “Offensive Security” text.

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