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

.flash-container {
  cursor: pointer;
  margin: 0;
  font-size: 14px;
  width: 100%;
  z-index: 100;

  .flash-notice {
    @extend .alert;
    @extend .alert-info;
    margin: 0;
  }

  .flash-alert {
    @extend .alert;
    @extend .alert-danger;
    margin: 0;
  }
}