Display issues with class=button-bar in android versions lower than 4.4

ionic-v1
1 

  <div class="list list-inset">
    <span class="item item-thumbnail-center" href="#">
  <img src="img/logo.png" />      
</span>
    <div class="button-bar">
      <a class="button button-assertive padding-left">User</a>
      <a class="button button-stable" ng-click="dealerregister()">Dealer</a>
    </div>

The above code is for generating the button bar as shown in the above image. It runs perfectly on android 4.4 and 5 but the display scrambles like the screen shown below when run on android versions lower than 4.4.

Plz suggest me what should i do to fix this issue. Thanks in advance.