Enable copy/ paste options and right-click on the restricted website by installing this easy-to-use chrome extension. If you want to copy the content from right click restricted site going for this extension is the better option
Install the Enable Copy extension from the download button given above, or you can also get it from the Chrome Webstore.
When you want to lift the copy/paste option or right click on website you want just click on the installed extension
Once the extension icon is changed from light grey to dark grey then all the pages under webpage is unrestricted
To disable this feature just click on extension icon again and it will truns to light grey and restriction will not be automatically lifted for the website