html,
body,
a {
  height: 100%;
  font-family: "Raleway", sans-serif;
  font-size: 24px;
  color: #033e6b;
}

.row {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  width: 100%;
}

.column {
  display: flex;
  flex-direction: column;
  flex-basis: 50%;
  flex: 1;
}

.vertical-center {
  align-self: center;
}
#testo-header {
  position: relative;
  margin: 10vh;
}
.cover {
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  box-shadow: inset 0 -1px 5px rgba(0, 0, 0, 0.6);
}
h1,
h2,
p {
  text-align: center;
  margin-bottom: 5vh;
  margin-right: 30px;
}
@media screen and (min-width: 769px) {
  #dx-cover {
    display: flex;
  }
  header {
    display: flex;
    position: relative;
    width: 100%;
    height: 100%;
    background: url(images/bkfr.jpg) center center;
    background-repeat: repeat-y;
  }
  #img-768 {
    display: none;
  }
}
@media screen and (max-width: 769px) {
  body {
    background-color: #d7a153;
  }
  #dx-cover {
    display: none;
  }
  header {
    background-image: linear-gradient(#f2eada, #d7a153);
    background-repeat: repeat-x;
  }
  #testo-header {
    position: relative;
    margin: 0vh;
  }
  #testo-header h1,
  h2,
  p {
    position: relative;
    margin: 2vh;
  }
  #img-768 {
    margin-bottom: 25px;
    width: 100%;
  }
}