title: Swift Change UIContainerView height and width
body: <p>I have two ContainerView which are placed above each other,for example ContainerA is front of ContainerB.</p>
  
  <p>When a Button tapped ContainerA width and height should change to a smaller size, then ContainerB will be shown.</p>
  
  <p>How can I change height and width of a container view using swift instead of story board? does it have something like transform?</p>