.contact {
  margin-bottom: 120px;
  text-align: center;
  height: 300px;
  margin-top: 30px;
}
.mailBtn {
  border-radius: 4px;
  margin-left: 115px;
  margin-top: 80px;
  box-shadow:     
  skyblue 1px 1px 6px, 
  skyblue -1px 1px 6px,
  skyblue 1px -1px 6px, 
  skyblue -1px -1px 6px;
}

@media (min-width: 530px) {
  .contact {
    margin-bottom: 0;
  }
  .mailBtn {
    border-radius: 6px;
    position: 0 250px;
    margin-left: 320px;
    margin-bottom: 350px;
    margin-top: 85px;
  }
  footer {
    bottom: -800px;
  }
}