copay/www/views/includes/clickToAccept.html

<button ng-disabled="isDisabled" class="click-to-accept__button button button-standard button-primary" ng-class="{disable: sendStatus}">
  <span ng-if="!sendStatus">
    <ng-transclude></ng-transclude>
  </span>
  <span class="click-to-accept__status-text" ng-class="{enter: sendStatus}">
    <img src="img/spinner.png">
    {{displaySendStatus}}
  </span>
</button>