title: How to use pos_hint with FloatLayout in kivy?
body: <p>I am trying to align labels and button in my test UI this is my kv file</p>
  
  <pre><code>&lt;test&gt;:   
  
      Label:        
          text: "foo"
          color: 0,1,0,1
          #pos:120,20
          pos_hint:{"right":0.1,"top":1}
      Label:
          text:"boo"
          color: 0,0,1,1
          #pos:80,20
          pos_hint:{"right":0.1,"top":0.5}
  
      Label:
          text:"bar"
          color: 1,0,0,1
          #pos:20,120
          pos_hint:{"right":0.1,"top":0.1}
      Button:
          text:"goo"
          size_hint:0.1,0.1
  </code></pre>
  
  <p>I am able to succesfully create labels foo,boo and bar using <em>pos</em> but when I used <em>pos_hint</em> it returns blank output?</p>