Why won`t my bootstrap site show right on iPad and mobil device. It won`t fall back into center position after touch to the left side

I am trying to build my first website with bootstrap. However, when I view it on iPad and Mobil device. And I touch slide the webpage to the left side of the screen, it will not fall back to center position. However, when sliding to the right side if falls back to center as it should.

also i should also say, i dont use any bootstrap media queries. dont know how yet.

I made a picture to illustrated the problem picture link

Link to my website

Kind Regards

Thomas