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W3.CSS Containers and Panels

  • Last Updated : 02 Mar, 2021

W3.CSS provides web developers with the two most useful classes i.e. container and panels. They are used to place content together with same font-color, background-color, font-size, font-family, etc.

w3-container: This class is used to add 16px padding on both the left and right side of the element. It can be used with all the HTML5 container elements i.e. div, article, section, header, footer, etc. All the elements inside this class share the same font-size, font-color, padding, alignment, etc.

Example: Using the w3-container class in the HTML page.

HTML




<!DOCTYPE html>
<html>
  
<head>
  
    <!-- Adding W3.CSS file through external link -->
    <link rel="stylesheet" href=
  
</head>
  
<body>
    <!-- w3-container is used to add 16px 
        padding to any HTML element  -->
    <!-- w3-center is used to set the content 
        of the element to the center. -->
    <div class="w3-container w3-center">
  
        <!-- w3-text-green sets the text 
            color to green. -->
        <!-- w3-xxlarge sets font size to 32px. -->
        <h2 class="w3-text-green w3-xxlarge">
            Welcome To GFG
        </h2>
    </div>
  
    <!-- w3-pink sets the background color pink -->
    <div class="w3-container w3-pink">
  
        <!-- w3-text-white sets the text 
            color to white -->
        <p class="w3-text-white ">
            GeeksforGeeks is a Computer Science 
            portal for geeks. It contains well 
            written, well thought and well 
            explained computer science and 
            programming articles, quizzes etc.
        </p>
    </div>
</body>
  
</html>

Output:



w3-panel: This class adds 16px padding on all sides i.e. top, right, bottom, left. It can also be used with all the HTML5 container elements i.e. div, article, section, header, footer, etc. All the elements inside this class share the same font-size, font-color, padding, alignment, etc.

Example: Using the w3-panel class in the HTML page.

HTML




<!DOCTYPE html>
<html>
  
<head>
  
    <!-- Adding W3.CSS file through external link -->
    <link rel="stylesheet" href=
  
</head>
  
<body>
    <!-- w3-container is used to add 16px 
        padding to any HTML element.  -->
    <!-- w3-center is used to set the content 
        of the element to the center. -->
    <div class="w3-container w3-center">
  
        <!-- w3-text-green sets the text 
            color to green. -->
        <!-- w3-xxlarge sets font size to 32px. -->
        <h2 class="w3-text-green w3-xxlarge">
            Welcome To GFG
        </h2>
    </div>
  
    <!-- w3-pink sets the background color pink -->
    <!-- w3-panel is used to 16px padding 
        from all the direction -->
    <div class="w3-panel w3-pink">
  
        <!-- w3-text-white sets the text 
            colur to white. -->
        <p class="w3-text-white">
            GeeksforGeeks is a Computer Science 
            portal for geeks. It contains well 
            written, well thought and well 
            explained computer science and 
            programming articles, quizzes etc.
        </p>
    </div>
</body>
  
</html>

Output:

You can see that the gap between heading and paragraph is increased because we have w3-panel class.

Note:

  • If you use paragraph tag then automatically padding is added between the content and the division.
  • You can use panels and containers to make styles like notes, quotes, alerts, cards and many more.



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