User Portlet User Portlet

Discussions
I tried to align **input fields** and ***buttons*** using *position* and *alignment* syntax but I think i am making mistake somewhere or using wrong syntax.my *buttons* are always appearing in top left corner whereas i want to keep it at center...
I need to develop user interface because my work will be used by third party who will not have prior knowledge of mathematica. also ,i was using mathematica 9 so it needed GUIKit. However after your suggestion, i am switching to mathematica 11. So do...