title: What is the use of Safe Area in iOS 11 ? and How to use in iOS Project for iPhone?
body: <p>I am new to work with xcode 9.2 and iOS 11.2. When I stared new project i got error symbol on storyboard about safe area. If i will not use storyboard and I will design my view programmatically then safe area will effect on my design? I mean on iOS 11 ?</p>
  
  <p>Thanks </p>