app/common/styles/elements/toast.scss

// Overrides style for ngToast notifications
.ng-toast {
  margin-top: 9em;
  .close {
    margin: .3em;
  }
  .title {
    font-weight: bold;
  }
  .ng-toast__message {
    max-width: 400px;
  }
  .alert {
    color: #333;
    border-radius: 0;
    text-align: left;
  }
}