You can use User Agent to view website on system in mobile view, just follow the step bellow to learn it.
HOW TO VIEW WEBSITE IN MOBILE VIEW ON COMPUTER
1. Open you Browser Mozilla Firefox when it open click on tools, now click on Add On, when it open you will see search box, search for User Agent, when you see it install and restart your Firefox.
- the UserAgent will successfully install now, click on customize on your Firefox to bring User Agent to top bar menu, after you bring it to top bar menu, open the webpage you want to change view it mobile view, after you have open the webpage click on start user agent, it will list some options click on Iphone, the user Agent will become Blue.
Now refresh that webpage,if the website have mobile view it will change the webpage to mobile view, to change it back to pc view click on that user agent again and click on default, now refresh the page it will change to pc view again.
Thats all, enjoy..