.fundo {
  background-size: contain;
  background-position: center;
  width: 100%;
  height: auto;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

a {
  text-decoration: none !important;
}

@media (min-width: 1200px) {
  .btn {
    display: block !important;
    margin: -220px auto 0 auto !important;
    position: relative;
    z-index: 5;
    padding: 15px !important;
    font-size: 25px !important;
  }
  .dk {
    display: block;
  }

  .mb {
    display: none;
  }
}

@media (max-width: 1199px) {
  .btn {
    display: block !important;
    margin: -300px auto 0 auto !important;
    position: relative;
    z-index: 5;
    padding: 15px !important;
    font-size: 25px !important;
  }

  .dk {
    display: none;
  }

  .mb {
    display: block;
  }
}