message: art: Meilleur placement de l'en-tete
diff: #header #logo {
  width: calc(1vw + 5em);
  }
  +
  +#headerRight {
  + min-width: 8em
  +}
  +
  +
  #menuButton {
  font-size: 300%;
  color: #3c4963;
  - margin: 0 0.4em;
  + margin: 0;
  + margin-left: .6em;
  display: inline-block;
  }
  nav {
  font-size: 110%;
  margin-bottom: 1em;
  + margin-left: 1em;
  display: inline-block;
  }
  #header #marianne {
  @@ -74,10 +82,6 @@ nav a {
  display: none;
  }
  - nav {
  - margin-right: 1em;
  - }
  -
  nav a {
  margin: 0.8em;
  font-size: 85%;
  