Solution 1 :

You have to add a meta tag to get responsive in chrome responsive mode
This is the meta tag <meta name="viewport" content="width=device-width, initial-scale=1.0">

Problem :

I am new developer for bootstrap. I made a product but if I collapse automatically from right side or left side of chrome it works responsive like I want. But when i choose from inspect and giving an absolute width it does not look like other one. I added two photo to describe clearly. Thank you for your effort everyone.

the wrong one

collapsed one