*, *:before, *:after {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

*, *:before, *:after {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

#contact {
  margin-top: -100px;
}

.firm:hover {
  opacity: 1;
}

.firm:active {
  opacity: 1;
}