JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>

<button  ng-click="showAbout();">About Page</button>
  <button ng-click="showhelp();">Help page</button>
  <button ng-click="showinfo();">Info Page</button>
  <button  ng-click="showref();">Refrence page</button>

  <div class="form-group" ng-show="showabout">
    <p>About page</p>
  </div>

  <div class="form-group" ng-show="showhelp" >
    <p>Help page</p>
  </div>

  <div class="form-group" ng-show="showinfo" >
    <p>Info</p>
  </div>

  <div class="form-group" ng-show="showref" >
    <p>Refrence</p>
  </div>

JavaScript

$scope.showabout = true;
$scope.showAbout = function () {
  $scope.showhelp = false;
  $scope.showinfo = false;
  $scope.showref = false;
};

$scope.showhelp = true;
$scope.showhelp = function () {
  $scope.showabout = false;
  $scope.showinfo = false;
  $scope.showref = false;
};

$scope.showinfo = true;
$scope.showinfo = function () {
  $scope.showabout = false;
  $scope.showhelp = false;
  $scope.showref = false;
};

$scope.showref = true;
$scope.showref = function () {
  $scope.showabout = false;
  $scope.showhelp = false;
  $scope.showinfo = false;
};