Create a Custom WordPress Sidebar with CSS

WordPress provides a powerful platform for building websites, and one of its key features is the ability to customize the appearance of your site through themes and styles. In this article, we’ll explore how to create a custom WordPress sidebar using HTML, CSS, and a bit of PHP.

Create a new WordPress theme file

Start by creating a new file in your WordPress theme directory. You can do this using a code editor or the WordPress theme editor. Name the file custom-sidebar.php.

Add PHP code for the sidebar:

Inside custom-sidebar.php, add the following PHP code to create a basic sidebar structure:

 * Template Name: Custom Sidebar

<aside id="custom-sidebar" class="custom-sidebar">
    <?php dynamic_sidebar('custom_sidebar'); ?>

This code creates a new template named “Custom Sidebar” and defines a sidebar area with the ID custom-sidebar. The dynamic_sidebar function is used to display the widgets added to this sidebar in the WordPress admin.

Add CSS for styling

Now, let’s style the custom sidebar by adding CSS. Create a new file named style.css in your theme directory if it doesn’t already exist. Add the following CSS code:

/* style.css */

.custom-sidebar {
    background-color: #f4f4f4;
    padding: 15px;
    border: 1px solid #ddd;

.custom-sidebar h2 {
    font-size: 1.5em;
    color: #333;

.custom-sidebar ul {
    list-style: none;
    padding: 0;

.custom-sidebar li {
    margin-bottom: 10px;

.custom-sidebar a {
    text-decoration: none;
    color: #0073e6;

This CSS code sets a background color, padding, and border for the sidebar. It also styles headings, lists, and links within the sidebar.

Register the Custom Sidebar

Open your theme’s functions.php file and add the following code to register the custom sidebar:

// functions.php

function custom_sidebar_widgets_init() {
        'name' => __('Custom Sidebar', 'text_domain'),
        'id' => 'custom_sidebar',
        'before_widget' => '<li>',
        'after_widget' => '</li>',
        'before_title' => '<h2>',
        'after_title' => '</h2>',
add_action('widgets_init', 'custom_sidebar_widgets_init');

This code registers a new sidebar named ‘Custom Sidebar’ with a unique ID (custom_sidebar). It also defines the HTML structure for widgets.

Apply the custom template to a page

Go to your WordPress admin dashboard, create a new page, and select the ‘Custom Sidebar’ template from the page attributes. This will apply the custom sidebar to that specific page.


By following these steps, you can create a custom WordPress sidebar and style it using CSS. This allows you to have more control over the appearance of your site and tailor the sidebar to fit your design preferences.

A big thank you for exploring TechsBucket! Your visit means a lot to us, and we’re grateful for your time on our platform. If you have any feedback or suggestions, we’d love to hear them. Looking forward to serving you again soon!

Leave a Reply

Your email address will not be published. Required fields are marked *