Twitter Bootstrap modal on mobile devices

Question

Bootstrap modals don\'t work correctly on Android and iOS. The issue tracker acknowledges the problem but does not offer a working solution:

Modals in 2.0 are broke

Answer 1

Mainly Nexus 7 modal issue , modal was going down the screen

  .modal:before {
    content: '';
    display: inline-block;
    height: 50%; (the value was 100% for center the modal)
    vertical-align: middle;
    margin-right: -4px;
  }