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HTML Classes

HTML Class

The class attribute is often used to point to a class name in a style sheet. It can also be used by a JavaScript to access and manipulate elements with the specific class name.

For example, imagine you have some paragraphs on your webpage, and you want some of them to have a different background color. You can create a class, let's say "highlight," and apply it to those specific paragraphs. Then, in your style settings, you can define that anything with the "highlight" class should have a yellow background.

 

Here's a simple representation in HTML:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>HTML Classes Example</title>
  <style>
    /* Define styles for the "highlight" class */
    .highlight {
      background-color: yellow;
    }
  </style>
</head>
<body>

  <!-- Apply the "highlight" class to a paragraph -->
  <p class="highlight">This paragraph has a yellow background.</p>

  <!-- Another paragraph without the "highlight" class -->
  <p>This paragraph is unaffected.</p>

</body>
</html>

 

Multiple Classes 

You can apply multiple classes to a single HTML element by separating them with spaces in the class attribute. This allows you to combine styles and behaviors from different classes. 

 

Here's an example HTML:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Multiple Classes Example</title>
  <style>
    /* Define styles for the classes */
    .highlight {
      background-color: yellow;
    }

    .italic {
      font-style: italic;
    }

    .underline {
      text-decoration: underline;
    }
  </style>
</head>
<body>

  <!-- Apply multiple classes to a paragraph -->
  <p class="highlight italic">This paragraph has a yellow background and is italicized.</p>

  <!-- Apply a different set of classes to another paragraph -->
  <p class="italic underline">This paragraph is italicized and underlined.</p>

</body>
</html>

In this example, there are three classes defined: .highlight, .italic, and .underline. You can see that you can apply multiple classes to a single paragraph element. The first paragraph has both the "highlight" and "italic" classes, while the second paragraph has "italic" and "underline" classes.

 

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