I recently completed a website using both materializecss and bootstrap platforms. While I know this may not be the best practice, it worked for my needs. However, I am facing an issue with the mobile view. When I reduce the viewport size, a margin appears alongside the entire body section and I cannot figure out what is causing it. I have provided two screenshots for reference, as well as links to the websites where you can see the issue in action: - See screenshot 1 here - View screenshot 2 here. If you require specific parts of the code to review, just let me know and I will gladly provide them. Visit the websites below to see the issue firsthand: - www.shariffoundation.ir/prototypetest - www.petrobavar.ir