acha-framework/src/frontend/core/scripts/directives/calendar/rtl.less

is a modular framework on both client (angular.js) and server (node.js) side, it provides security, orm, ioc, obfuscation and ...

.af-calendar{
  background: #fff;
  display: inline-block;

  .datepicker-days,
  .datepicker-months,
  .datepicker-years{
    display: block;
  }

  .next,.prev{
    visibility: visible;
  }
}