text in <h1> tag not visible in ion-content element

I am trying to make single page application using ionic .But why I am not able to see contend in tag.my contend text is hidden why ?

code http://codepen.io/anon/pen/pvYdNM

<ion-view>
      <ion-header-bar class=" bar bar-positive">
          <h1 class="title">Title!</h1>                 
      </ion-header-bar>
      <ion-content>
          <h1>contend</h1>
      </ion-content>
      <ion-footer-bar class=" bar bar-footer bar-positive">
           <h1 class="title">Fotter!</h1>
      </ion-footer-bar>
  </ion-view>

Answer :

<ion-view>
      <ion-header-bar class=" bar bar-positive test">
          <h1 class="title">Title!</h1>    
      </ion-header-bar>
      <ion-content>
          <h1>contend</h1>
      </ion-content>
      <ion-footer-bar class=" bar bar-footer bar-positive">
           <h1 class="title">Fotter!</h1>
      </ion-footer-bar>
  </ion-view>

<style>

    .test {
     border: 1px solid red;
     position: relative!important;
    }
    </style>