How to rewrite the third-party module template files from my custom module using Preference?

I am rewriting the model file using preference in a custom module,

<?xml version="1.0"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd"> <preference for="MagefanBlogModelPost" type="ManciniMagefanBlogModelMagefanPost" /> </config> 

Same how to rewriting viewfrontendtemplates and CSS using preference in a custom module?