Horje
This plugin re-adds the full page admin Custom CSS editor to Jetpack.

Noted That:

  • To install correctly this legacy-jetpack-custom-css-editor.zip.
  • Fisrt Download the legacy-jetpack-custom-css-editor.zip to your computer
  • Extract/Open legacy-jetpack-custom-css-editor.zip to Your Computer.
  • Then, Find readme.txt file inside legacy-jetpack-custom-css-editor.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 "legacy-jetpack-custom-css-editor.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 "legacy-jetpack-custom-css-editor.zip" Downloaded plugin from your computer, Where you downloaded legacy-jetpack-custom-css-editor.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. "Legacy Jetpack Custom CSS Editor" folder is added on left sidemenu. Now, Click on "Legacy Jetpack Custom CSS Editor" folder.

   Noted that: If you do not see "Legacy Jetpack Custom CSS Editor" folder on left sidemenu then, see at left sidemenu "Settings" or "Tools".

8. Now you configure yourself oR Watch video tutorial below about Legacy Jetpack Custom CSS Editor Configurtions and Settings or How to work "Legacy Jetpack Custom CSS Editor" 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 "Legacy Jetpack Custom CSS Editor" Activated Plugin from Plugin List.
  4. Then, Click on "Settings" from Plugin that is Legacy Jetpack Custom CSS Editor
  5. Now, Edit/Add/Config the setting and Click on "Save Changes" button,
WP Plugin Setting


Reffered: https://wordpress.org/