.index-header {
  margin-top: -20px;
  padding-top: 50px;
  background: #285291 linear-gradient(0deg, #22477d 0, #346bbf 100%) repeat;
  box-shadow: inset 0px 0px 5px 0px #656565;
}
.index-header .img {
  margin-top: 20px;
  text-align: center;
}
.index-header .img img {
  width: 80%;
  max-width: 410px;
  height: auto;
}
.index-header .title {
  margin-top: 60px;
  font-size: 250%;
  color: white;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}
.index-header .intro {
  color: white;
  font-size: 150%;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}
.index-header .btn {
  border: 1px white solid;
  color: white;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
  margin-top: 20px;
}
.index-header .btn:hover {
  color: #999;
}

/* Bouton « Configurer mon Windbird » : flottant à droite sur écran large uniquement */
.index-header-buttons .btn {
  margin-top: 0;
}
@media (min-width: 768px) {
  .index-header-buttons .btn {
    float: right;
    margin-top: -20px;
  }
}

.index-discover {
  text-align: center;
}
.index-discover .argument {
  padding-top: 30px;
  padding-bottom: 30px;
}
.index-discover .argument img {
  padding-top: 10px;
  padding-bottom: 10px;
  max-width: 80%;
  height: auto;
}
.index-discover .argument:nth-child(even) {
  background-color: #F5F5F5;
}

.index-price {
  font-size: 400%;
  font-weight: bold;
}

.index-call-to-action {
  padding: 50px;
  text-align: center;
}

.index-references {
  text-align: center;
}
.index-references .logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
}
.index-references img {
  width: 100px;
  height: auto;
  margin: 10px;
}

.index-specs h2 {
  text-align: center;
}
.index-specs .container {
  max-width: 600px;
}