.header {
  background: url(../img/back.jpg) no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  position: relative;
  margin-bottom: 20rem;
}

.header-description {
  margin: 0 auto;
  padding: 8rem 0;
  text-align: center;
}

.pb0 {
  position: absolute;
  bottom: 0;
}

.header-description h2 {
  line-height: 7rem;
}

.header-buttons {
  margin-top: 1rem;
}

.header-buttons a {
  margin: 0 0.5rem;
}

.header-description p {
  margin-top: 3rem;
}

.newsletter {
  background-color: #dbe7ff;
}

@media only screen and (max-width: 600px) {
  .header-description {
    width: 90%;
    margin: 0 auto;
  }
}