h3 {
  margin-top: 36px;
  margin-bottom: 36px;
  font-family: Montserrat, sans-serif;
  font-size: 26px;
  line-height: 30px;
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
}

h4 {
  margin-top: 10px;
  margin-bottom: 10px;
  font-family: Montserrat, sans-serif;
  font-size: 18px;
  line-height: 24px;
  font-weight: 700;
}

.body {
  overflow: auto;
  height: 100vh;
  margin-top: 200px;
  margin-bottom: 200px;
  padding-top: 200px;
  padding-bottom: 200px;
  font-family: Montserrat, sans-serif;
}

.dune-logo {
  display: block;
  width: 360px;
  margin-right: auto;
  margin-bottom: 52px;
  margin-left: auto;
}

.section {
  position: fixed;
  left: 0px;
  top: 0px;
  right: 0px;
  bottom: 0px;
  z-index: -1;
  display: block;
  width: 100%;
  height: 100vh;
  min-height: 100%;
  min-width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-top: 356px;
  background-image: url('../images/dune-back.jpg');
  background-position: 50% 50%;
  background-repeat: no-repeat;
  background-attachment: fixed;
  text-align: center;
}

.new-site {
  display: inline-block;
  margin-top: 10px;
  padding: 11px;
  border-radius: 12px;
  background-color: hsla(0, 0%, 100%, .4);
  font-family: Montserrat, sans-serif;
  color: #000;
  text-transform: uppercase;
}

.contact-info {
  margin-bottom: 61px;
  font-family: Montserrat, sans-serif;
  color: rgba(0, 0, 0, .5);
  font-size: 17px;
  line-height: 28px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.mark {
  margin-bottom: 10px;
  color: #000;
  text-transform: uppercase;
}

.h3 {
  color: rgba(0, 0, 0, .5);
}

.link {
  color: rgba(0, 0, 0, .5);
  text-decoration: none;
}

.link:hover {
  color: #000;
}

.conent {
  display: block;
  max-width: 1000px;
  margin: 56px auto;
  padding-right: 30px;
  padding-left: 30px;
  text-align: center;
}

.field {
  border-radius: 12px;
  background-color: hsla(0, 0%, 100%, .71);
}

.button {
  margin-top: 11px;
  margin-bottom: 11px;
  padding: 11px 36px;
  border-radius: 12px;
  background-color: rgba(27, 106, 175, .71);
  text-transform: uppercase;
}

.button:hover {
  background-color: rgba(26, 106, 176, .91);
}

.form-block {
  display: block;
  overflow: hidden;
}

@media (max-width: 991px) {
  .body {
    padding: 0px;
  }
  .h3 {
    font-size: 21px;
  }
}

@media (max-width: 767px) {
  .body {
    padding: 0px;
  }
  .section {
    padding-top: 179px;
  }
  .h3 {
    font-size: 28px;
    line-height: 37px;
  }
}

@media (max-width: 479px) {
  .body {
    min-height: 100%;
    padding-top: 0px;
    padding-right: 0px;
    padding-left: 0px;
  }
  .dune-logo {
    padding-right: 21px;
    padding-left: 21px;
  }
  .section {
    width: 80%;
    min-height: 100%;
    padding-top: 67px;
  }
  .new-site {
    font-size: 13px;
  }
  .contact-info {
    display: inline-block;
    margin-right: auto;
    margin-left: auto;
    font-size: 13px;
    text-align: center;
    letter-spacing: 0px;
  }
  .h3 {
    font-size: 25px;
  }
  .conent {
    padding-right: 20px;
    padding-left: 20px;
  }
}