Header not displaying the way i want

1

This code is not displayin the way i want. no coloris showing. just simple text. Please helps

        <button class="button button-icon icon ion-ios7-minus-outline" ng-click="data.showDelete =
        !data.showDelete; data.showReorder = false"></button>
        
        <h1 class="title"> TODO tasks </h1>
        
        <button class="button button-icon  ion-arrow-move" ng-click="data.showDelete = false
        ; data.showReorder = !data.showReorder"></button>
        
     </ion-header-bar>