(bug): Responsive design problem - white line is added when you re-size the screen

Summary

(Summarize the bug encountered concisely)

Steps to reproduce

1. Go to minds.com
2. Login
3. Go to the top Videos
4. Resize the screen to the minimum
5. Scroll the site to the right

Platform information

Windows 7

Browser: Chrome

What is the current bug behavior?

White line is added on the right side of the screen

What is the expected correct behavior?

whole background of the screen is gray

Relevant logs and/or screenshots

Possible fixes

(If you can, link to the line of code that might be responsible for the problem)