     ion-list {
        width: calc(100% - 20px);
      }
    </style>
  </head>

  <body>
    <ion-app>
      <ion-content>
        <div class="container">
          <ion-list>
            <ion-item>
              <ion-label>Regular textarea</ion-label>
              <ion-textarea placeholder="Type something here"></ion-textarea>
            </ion-item>
            <ion-item>
              <ion-label>Readonly textarea</ion-label>
              <ion-textarea readonly="true" placeholder="Can't edit this"></i