Explain the three main ways to apply CSS styles to a web page

There are three main ways to apply CSS styles to a web page:

  1. Inline CSS: Inline CSS involves placing the CSS code directly within the HTML elements using the “style” attribute. This method applies styles specifically to individual elements. Here’s an example:
<p style="color: blue; font-size: 18px;">This is a paragraph with inline CSS.</p>

In this case, the paragraph text will be displayed in blue with a font size of 18 pixels. Inline CSS is useful for applying unique styles to specific elements but can become cumbersome if you need to style multiple elements or maintain consistent styles across multiple pages.

  1. Internal CSS: Internal CSS involves placing the CSS code within the <style> tags in the <head> section of an HTML document. The styles defined in the internal CSS apply to the entire page or a specific section. Here’s an example:
<!DOCTYPE html>
<html>
<head>
    <style>
        p {
            color: blue;
            font-size: 18px;
        }
    </style>
</head>
<body>
    <p>This is a paragraph with internal CSS.</p>
</body>
</html>

In this case, all <p> elements on the page will have the defined styles: blue text color and a font size of 18 pixels. Internal CSS allows you to centralize styles within the HTML file itself, making it easier to manage styles for a single page.

  1. External CSS: External CSS involves creating a separate CSS file with the .css extension and linking it to an HTML document using the <link> tag in the <head> section. The external CSS file contains all the styles for the website, and multiple HTML pages can reference and apply those styles. Here’s an example:

HTML file (index.html):

<!DOCTYPE html>
<html>
<head>
    <link rel="stylesheet" type="text/css" href="styles.css">
</head>
<body>
    <p>This is a paragraph with external CSS.</p>
</body>
</html>

CSS file (styles.css):

p {
    color: blue;
    font-size: 18px;
}

In this case, the styles defined in the external CSS file will be applied to the <p> element in the HTML file. External CSS offers the advantage of separating style information from HTML, making it easier to maintain and update styles across multiple pages. It promotes reusability and consistency in styling.

By using one or a combination of these methods, you can apply CSS styles to your web pages based on your specific needs and requirements.

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