JSFiddle - React, Tailwind, and code Playground
HTML
<body ng-app="myApp" ng-controller="Ejemplo">
<button ng-click="openRegisterModal()" tabindex="6" class="btn btn-default ng-scope" translate="">Registrate</button>
</body>
CSS
.btn-default{
margin-left:12px;
margin-bottom:0px;
width:auto;
}
JavaScript
var myApp = angular.module('myApp', []);
myApp.controller('Ejemplo',['$scope', function($scope){
$
}])