designer

designer.html

<link rel="import" href="../paper-input/paper-input.html">

<polymer-element name="my-element">

  <template>
    <style>    
      :host {
        position: absolute;
        width: 100%;
        height: 100%;
        box-sizing: border-box;
      }
      #paper_input {
        left: 360px;
        top: 170px;
        position: absolute;
      }
      #hi{
        left: 360px;
        top: 170px;
        position: absolute;
      	height: 20px;
        width: 20px;
      }
    </style>
    	<paper-input label="Type something..." willvalidate id="paper_input" on-blur="{{ handlemail }}" layout vertical></paper-input>
    <div id="hi"></div>
  </template>

  <script>

    Polymer({
      handlemail: function (){
        	document.getElementById('paper_input').style.backgroundColor = "lightred";
      	}
    });

  </script>

</polymer-element>