Imagine you have a webpage divided into two main sections:
<div id='section_1'>[various content]</div>
<div id='section_2'></div> <!-- an external site will be displayed here -->
In section_1, there is a form that allows users to load content from another website into section_2. This process involves the user inputting an external URL, submitting it, and then the content appearing in section_2. An ajax call is made to retrieve the code of the external site server-side, which is then sent to section_2. This includes scripts, CSS, and other elements.
The question arises: How can we contain the CSS stylesheets of the external site within section_2 without affecting section_1 or any other part of the page?