.cadre_tutoriels {
  margin-top: 10px;
  margin-left: 5px;
  padding: 5px;
  border-left: 1px solid gray;
  border-bottom: 1px solid gray;
}  

#centre_gauche_large {
  float: left;
  width: 620px;
}

#centre_droit_reduit {
  float: left;
  width: 225px;
}

pre {
  background-color: #fffae9;
  border: 1px solid silver;
  margin-left: 10px;
  margin-right: 10px;
  padding: 5px;
  font-size: 12px;
  color: #41330c;
}

.cadre_etape{
  background-color: #f2f5f7;
  border-style: solid;
  border-color: #b8c9e0;
  border-top-width: 1px;
  border-bottom-width: 1px;
  border-right-width: 1px;
  border-left-width: 1px;
  padding-left: 5px;
  padding-right: 5px;
  margin: 5px;
  font-size: 10px;
}