.wrapper {
  min-height: 100vh;
  background-color: #000;
}

.splashtop {
  min-height: 50vh;
  background-color: transparent;
  background-image: url('../images/Dals.jpg');
  background-position: 50% 50%;
  background-size: cover;
}

.splashbottom {
  min-height: 50vh;
  background-image: url('../images/Boston.jpg');
  background-position: 50% 50%;
  background-size: cover;
}

.mask {
  position: fixed;
  left: 0px;
  top: 0px;
  right: 0px;
  bottom: 0px;
  display: none;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -webkit-flex-direction: row;
  -ms-flex-direction: row;
  flex-direction: row;
  background-color: rgba(0, 0, 0, .2);
}

.button-dal {
  margin-top: 15vh;
  margin-right: 15vw;
  padding: 20px 40px 10px;
  float: right;
  border-radius: 30px;
  background-color: #707070;
  -webkit-transition: background-color 800ms ease;
  transition: background-color 800ms ease;
  font-family: 'Great Vibes', cursive;
  font-size: 40px;
  line-height: 55px;
  font-weight: 400;
}

.button-dal:hover {
  background-color: #cacaca;
  color: #000;
}

.button-dal.boston {
  margin-top: 23vh;
  margin-right: 0vw;
  margin-left: 4vw;
  float: left;
  background-color: #456927;
}

.button-dal.boston:hover {
  background-color: #92d35b;
}

@media (max-width: 991px) {
  .button-dal {
    margin-top: 19vh;
    margin-right: 6vw;
    padding: 15px 25px 8px;
    font-size: 30px;
    line-height: 40px;
  }
}

@media (max-width: 767px) {
  .button-dal {
    margin-top: 21vh;
    margin-right: 7vw;
    font-size: 26px;
    line-height: 35px;
  }
  .button-dal.boston {
    margin-top: 40vh;
    margin-left: 5vw;
  }
}

@media (max-width: 479px) {
  .splashtop {
    text-align: center;
  }
  .splashbottom {
    text-align: center;
  }
  .button-dal {
    display: inline-block;
    margin-top: 41vh;
    margin-right: 0vw;
    float: none;
    text-align: center;
  }
  .button-dal.boston {
    margin-top: 42vh;
    float: none;
  }
}