JSFiddle - React, Tailwind, and code Playground

HTML

<div ng-app="application">

  <div ng-controller="SomeController as controller">
        <h1>{{ controller.hello }}</h1>
        <!-- Menu 1 -->
        <div class="select-box left">
            <div class="select-box-field" ng-click="dropdown = !dropdown;">
                <span>Menu 1</span>
            </div>
            <div class="select-box-field-dropdown" ng-class="{ 'is-active':dropdown }">
                <span>Dropdown menu Item 1</span>
                <span>Dropdown menu Item 2</span>
            </div>
        </div>
        
        <!-- Menu 2 -->
        <div class="select-box right">
            <div class="select-box-field" ng-click="dropdown = !dropdown;">
                <span>Menu 2</span>
            </div>
            <div class="select-box-field-dropdown" ng-class="{ 'is-active':dropdown }">
                <span>Dropdown menu Item 1</span>
                <span>Dropdown menu Item 2</span>
            </div>
        </div>
                
  </div>
</div>

CSS

.select-box {
  position: relative; 
  font-family: Helvetica, Arial, sans-serif;
}
.left { 
    float: left;
}
.right {
    float:right;
}
.select-box-field {
  width: 200px;
  height: 20px;
  line-height: 20px;
  background: #f6f6f6;
  font-size: 16px;
  padding: .5rem;
  border: 1px solid rgba(44, 62, 80, 0.25);
  cursor: pointer; 
}
.select-box-field:hover {
  background: #f0f0f0; 
}
.select-box-field-dropdown {
  display: none;
  position: absolute;
  left: 0;
  top: 100%;
  background: white;
  box-shadow: 0 2px 4px rgba(44, 62, 80, 0.25);
  padding: 1rem;
  z-index: 10; 
}
.select-box-field-dropdown.is-active {
  display: block;
}

JavaScript

(function() {

  var app = angular.module('application', []);

  app.controller('SomeController', someCtrl);

  function someCtrl () { 

    var vm = this;
    vm.hello = 'Hello World';

  };
})();