I recently created a website using a mix of bootstrap 4 templates, but I am facing some issues with the navigation bar on mobile devices. The hamburger icon for the navbar is not visible until I scroll halfway down the page. In the top half of the page, I have to horizontally scroll to see the hamburger icon, while in the bottom half it suddenly appears without scrolling. I have tried to inspect the HTML and CSS files to identify the problem, but I can't seem to find anything that defines this behavior. Can anyone guide me on where to look? Unfortunately, I cannot share screenshots due to my reputation level. Additionally, the navbar does not stay fixed on mobile devices. Despite thoroughly reviewing the CSS and HTML code, I haven't been able to pinpoint any conflicting code or unusual styling that could be causing this issue. Could there be some hidden conflicting code somewhere in the files? Any assistance would be greatly appreciated.