gitlab-org--gitlab-foss/app/assets/stylesheets/framework/modal.scss

.modal-body {
  position: relative;
  padding: 15px;

  .form-actions {
    margin: -$gl-padding + 1;
    margin-top: 15px;
  }

  .text-danger {
    font-weight: bold;
  }
}

body.modal-open {
  overflow: hidden;
}

.modal .modal-dialog {
  width: 860px;
}