Header and Footer Issues on mobile phones

Hi,

I tested my site (tmpjp.ntrand.com) on mobile phones such as iPhone 6 or Samsung Note 3/4, and found these issues:
1. The last item listed in my main menu (i.e., Careers) is not shown on the devices.
2. Footer menu (menu on the same line as the copyright info) shown on desktop is not shown on the devices.

How do I correct these?

Thanks,

Fara