Horje
WP Sticky Sidebar plugin will make your menu or header stick to the side of page, after desired number of pixels when scrolled down and up.

Noted That:

  • To install correctly this mystickysidebar.zip .
  • Fisrt Download the mystickysidebar.zip to your computer
  • Extract/Open mystickysidebar.zip to Your Computer.
  • Then, Find readme.txt file inside mystickysidebar.zip and Open readme.txt .
  • Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
  • Then, Follow the Tips Below.

Start the Tips:

1. First Download " mystickysidebar.zip " Plugin to your Local Computer. (Click Download)

2. Then, Login to your " yourdomain.com/wp-admin " Dashboard.

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3. Then, Click on " Plugins " + " Add New " from left sidemenu of Dashboard.

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4. Now, Click on "Upload Plugin" button.

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5. Now, Browse " mystickysidebar.zip "  Downloaded plugin from your computer, Where you downloaded mystickysidebar.zip According to Step – 1 Above then, click on " Install Now"

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6. Now, Click on " Active Plugin"

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7. Then, See left sidemenu. " WP Sticky Sidebar – Floating Sidebar On Scroll for Any Theme " folder is added on left sidemenu. Now, Click on " WP Sticky Sidebar – Floating Sidebar On Scroll for Any Theme " folder.

   Noted that: If you do not see " WP Sticky Sidebar – Floating Sidebar On Scroll for Any Theme " folder on left sidemenu then, see at left sidemenu " Settings " or " Tools ".

8. Now you configure yourself oR Watch video tutorial below about  WP Sticky Sidebar – Floating Sidebar On Scroll for Any Theme Configurtions and Settings or How to work " WP Sticky Sidebar – Floating Sidebar On Scroll for Any Theme " in your WordPress site.

 

oR

After Activated Plugin According to Step-6 then,

  1. Go to " Plugins " + " Installed Plugin " from Wordpress Admin Panel Leftside Menu.
  2. or Direct go to: https://yourdomain/wp-admin/plugins.php
  3. Then, Find " WP Sticky Sidebar – Floating Sidebar On Scroll for Any Theme " Activated Plugin from Plugin List.
  4. Then, Click on " Settings " from Plugin that is WP Sticky Sidebar – Floating Sidebar On Scroll for Any Theme
  5. Now, Edit/Add/Config the setting and Click on " Save Changes " button,
WP Plugin Setting


Guide

Install like any other plugin. After install activate.
Go to Settings / WP Sticky Sidebar and change Sticky Class to .your_sidebar_class or sidebar css id.
Use additional margin top to fine tune sidebar position.

Reffered: https://wordpress.org/