How can I Edit WordPress Page in IDE like PhpStorm or Sublime?

Take a look at this answer to a similar question: How do I edit the php/html for a particular post?

You will need to understand how WP ‘builds’ a page. Page content is stored in the database. The output is generated through the theme’s templates. The actual template used depends on the Template Hierarchy. The answer linked above will get you started in your learning.