Using angular sanitize

<!DOCTYPE html>
<html>

  <head>
    <script data-require="angular.js@1.5.8" data-semver="1.5.8" src="https://code.angularjs.org/1.5.8/angular.js"></script>
    <script data-require="angular-sanitize@*" data-semver="1.4.3" src="https://code.angularjs.org/1.4.3/angular-sanitize.js"></script>
    <link rel="stylesheet" href="style.css" />
    <script src="script.js"></script>
  </head>

  <body ng-app="app" ng-controller="testController">
    <div ng-bind-html="customHtmlContent">
    </div>
  </body>

</html>

angular.module('app', ['ngSanitize'])
  .controller('testController', function($scope, $sanitize){
    $scope.customHtmlContent = $sanitize('<strong>Lorem ipsum dolor</strong>');
  });