message: art: Style de la barre de progression
diff: #sim .tip {
  font-style: italic;
  - margin-bottom: .6em;
  + margin-bottom: 1em;
  text-align: center;
  }
  #sim .tip p {
  }
  #sim .tip progress {
  margin-left: 1em;
  + background: white;
  + border: 1px solid #2975D1;
  +}
  +
  +progress::-webkit-progress-bar {
  + background: white;
  +}
  +
  +progress::-webkit-progress-value {
  + background: #2975D1;
  }
  