Problem in my Layout Grids

[thiagosaadofficial]

I’m using the Grid of ionic 2, but even so my Layout is not responsive on tablets / ipads, what do I do?

NOME DO APP

<!-- Formulário de Login INÌCIO-->
<ion-row>
  <ion-col width-90>
    <ion-item color="transparent">
      <ion-label color="light" floating>{{textUserLogin}}</ion-label>
      <ion-input type="text" required></ion-input>
    </ion-item>
    
    <ion-item color="transparent">
      <ion-label color="light" floating>{{textUserPassword}}</ion-label>
      <ion-input type="password" required></ion-input>
    </ion-item>
  </ion-col>
</ion-row>
<!-- Formulário de Login FIM -->

<!-- Botões Formulário INÌCIO-->
  <ion-row>
    <ion-col>
      <div class="btn">
        <button ion-button (click)='goToHomeUser()' color="light" block outline>{{textBtnLogin}}</button>
        <button ion-button (click)='goToRecuperarConta()' color="danger" block outline>{{textBtnLostPassword}}</button>
      </div>
    </ion-col>
  </ion-row>
<!-- Botões Formulário FIM -->

{{textBtnRegister}}