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HTML - add css to html

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Created by:
Palpys
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In this article, we would like to show how to add styles to HTML code (how to add CSS to HTML).

The most popular approaches are: using link tag, style tag and  style attribute.

Quick solutions:

1. Link to stylesheet file (*.css file):

<link rel="stylesheet" type="text/css" href="/path/to/styles.css" />

Hint: put it to <head> element.

2. Embedded styles:

<style>

    body {
        background: red;
    }

</style>

Hint: put it somewhere in the source code.

3. Inline styles:

<p style="font-size: 20px; color: brown;">Brown text ...</p>

 

This article is like an overview of different approaches with examples.

Practical examples

1. Link to stylesheet file example

index.htm file:

<!doctype html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="styles.css" />
</head>
<body>
  Red web page...
</body>
</html>

styles.css file:

body {
    background: red;
}

Result:

Link to stylesheet file example.
Link to stylesheet file example.

2. Embed CSS (style tag) example

index.htm file:

// ONLINE-RUNNER:browser;

<!doctype html>
<html>
<head>
  <style>
  
    body {
        background: red;
    }

  </style>
</head>
<body>
  Red web page...
</body>
</html>

Result:

Embed CSS (style tag) example.
Embed CSS (style tag) example.

3. Inline styles example

index.htm file:

// ONLINE-RUNNER:browser;

<!doctype html>
<html>
<body style="background: red;">
  <p style="font-size: 20px; color: brown;">
    Red web page...
  </p>
</body>
</html>

Result:

Inline styles example.
Inline styles example.

4. Import of stylesheet file example

index.htm file:

<!doctype html>
<html>
<head>
  <style>

    @import 'styles.css';

  </style>
</head>
<body>
  This is red web page...
</body>
</html>

styles.css file:

body {
    background: red;
}

Result:

Import of stylesheet file example.
Import of stylesheet file example.

5. JavaScript CSS file injection example

index.htm file:

<!doctype html>
<html>
<body>
  <p>This is red web page...</p>
  <script>
  
    var element = document.createElement('link');

    element.addEventListener('load', function() {
        document.body.innerHTML += '<p>Styles loaded!</p>';
    });

    element.addEventListener('error', function() {
        document.body.innerHTML += '<p>Styles error!</p>';
    });

    element.setAttribute('rel', 'stylesheet');
    element.setAttribute('href', 'styles.css');

    document.head.appendChild(element);

  </script>
</body>
</html>

styles.css file:

body {
    background: red;
}

Result:

JavaScript CSS file injection example.
JavaScript CSS file injection example.

6. JavaScript Embed CSS (style tag) injection example

index.htm file:

// ONLINE-RUNNER:browser;

<!doctype html>
<html>
<body>
  <p>This is red web page...</p>
  <script>
  
    var element = document.createElement('style');

    element.appendChild(document.createTextNode('body { background: red; }'));
    // Add more rules here ...

    document.head.appendChild(element);

  </script>
</body>
</html>

Result:

JavaScript style tag injection example.
JavaScript style tag injection example.

7. JavaScript inline styles example

index.htm file:

// ONLINE-RUNNER:browser;

<!doctype html>
<html>
<body id="page">
  <p>This is red web page...</p>
  <script>
  
    var element = document.getElementById('page'); // or document.body

    element.style.background = 'red';
    element.style.color = 'brown';
    //element.style.cssText = 'background: red; color: brown;';

  </script>
</body>
</html>

Result:

JavaScript inline styles example.
JavaScript inline styles example.

    Alternative titles

    1. HTML - how to attach css to html?
    2. HTML - how to add css file to html?
    3. HTML - how to add style file to html?
    4. HTML - how to attach style file to html?
    5. HTML - different ways how to attach style to html?
    6. HTML - different ways how to add style file to html?
    7. HTML - how to include css to html?
    8. HTML - how to import css to html?
    9. HTML - how to import style to html?
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