Noted That:

• To install correctly this css-flags.zip .
• Fisrt Download the css-flags.zip to your computer
• Extract/Open css-flags.zip to Your Computer.
• Then, Find readme.txt file inside css-flags.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 " css-flags.zip " Plugin to your Local Computer. (Click Download)

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

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

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

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

6. Now, Click on " Active Plugin"

7. Then, See left sidemenu. " CSS Flags library " folder is added on left sidemenu. Now, Click on " CSS Flags library " folder.

   Noted that: If you do not see " CSS Flags library " folder on left sidemenu then, see at left sidemenu " Settings " or " Tools ".

8. Now you configure yourself oR Watch video tutorial below about  CSS Flags library Configurtions and Settings or How to work " CSS Flags library " in your WordPress site.

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 " CSS Flags library " Activated Plugin from Plugin List.
4. Then, Click on " Settings " from Plugin that is CSS Flags library
5. Now, Edit/Add/Config the setting and Click on " Save Changes " button,

Plugin

1. Download the latest stable release
2. Add and activate it. This will load the CSS (4 MB) and cache it using the WordPress Transients API . The default cache time is 7200. The cache time can be changed using the css_flags_cachetime filter.
3. Add one of the filters, see Usage above, to your plugin or (child) themes functions.php

Theme

1. Extract the plugin in your (child) theme folder:

2. Add the following to your (child) theme functions.php

   
   require_once(dirname(__FILE__) . '/css-flags/css-flags.php');
   

3. Add one of the filters, see Usage above, to your (child) themes functions.php

To get you started, here’a a sample theme functions.php