message: Style position and margin of checkboxes and answers
diff: display: inline-block;
  }
  .answers {
  - padding-top: 20px;
  - padding-left: 20px;
  + padding-top: 7px;
  + padding-left: 15px;
  background-color: whitesmoke;
  }
  width: 100%;
  display: flex;
  + .mat-checkbox {
  + margin-left: 14px;
  + margin-right: 6px;
  + margin-top: 18px;
  + }
  .mat-form-field {
  flex-grow: 1;
  }
  