This is easily way for add css for group cms pages Try this :- Please follow below steps to add css and js to specific cms page using custom module. > 1. Create custom module using below step **app/code/Mage/Mohit/registration.php** <?php \Magento\Framework\Component\ComponentRegistrar::register( \Magento\Framework\Component\ComponentRegistrar::MODULE, 'Mage_Mohit', __DIR__ ); **app/code/Mage/Mohit/etc/module.xml** <?xml version="1.0" encoding="UTF-8"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd"> <module name="Mage_Mohit" setup_version="1.0.0"/> </config> **app/code/Mage/Mohit/view/frontend/web/css/custom.css**.Then add your css code into `custom.css` file And goto your admin panel and open you want to add css page. > 2. **GOTO ADMIN -> Content -> Pages -> Edit page -> Design -> Layout Update XML and add below code for particulate page.** <head> <css src="Mage_Mohit::css/custom.css"/> </head> For the other cms page create specific css file and add `app/code/Mage/Mohit/view/frontend/web/css/` and add that css file into other cms page same as step2 via just changing css file name. And add more css file this path `app/code/Mage/Mohit/view/frontend/web/css` and call this type <head> <css src="Mage_Mohit::css/more.css"/> </head> Hope help you Thanks ...