body {
  padding: 0;
  margin: 0;
  background-color: #E9FBFD;
  text-align: center;
}

h1 {
  font-family: 'Roboto', sans-serif;
  font-weight: 500;
  text-transform: uppercase;
  color: #800000;
  font-size: 40px;
}

p, a {
  font-family: 'Roboto Slab', serif;
  font-size: 20px;
}

.email {
  color: black;
}

.middle {
  position: absolute;
  margin-top: 120px;
  transform: translateY(-50%);
  width: 100%;
}

.btn {
  display: inline-block;
  width: 90px;
  height: 90px;
  background: #f1f1f1;
  margin: 10px;
  border-radius: 30%;
  box-shadow: 0 5px 15px -5px #00000070;
  color: #800000;
  overflow: hidden;
  position: relative;
  margin-bottom: 80px;
}

.btn i {
  line-height: 90px;
  font-size: 26px;
  transition: 0.2s linear;
  -webkit-transition: 0.2s linear;
  -moz-transition: 0.2s linear;
  -o-transition: 0.2s linear;
}

.btn:hover i{
  transform: scale(1.3);
  -webkit-transform: scale(1.3);
  -moz-transform: scale(1.3);
  -o-transform: scale(1.3);
  color: #f1f1f1;
}

.btn::before {
  content: "";
  position: absolute;
  width: 120%;
  height: 120%;
  background: #800000;
  transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  left: -110%;
  top: 90%;
}

.btn:hover::before {
  animation: aaa 0.7s 1;
  -webkit-animation: aaa 0.7s 1;
  -moz-animation: aaa 0.7s 1;
  -o-animation: aaa 0.7s 1;
  top: -10%;
  left: -10%;
}

@keyframes aaa {
  0% {
    left: -110%;
    top: 90%;
  }
  50% {
    left: 10%;
    top: -30%;
  }
  100% {
    top: -10%;
    left: -10%;
  }
}

.middle #back {
  color: #800000;
  text-decoration: none;
}

@media screen and (max-width: 451px) {
  .middle {
    margin-top: 210px;
  }
}

@media screen and (max-width: 223px) {
  .middle {
    margin-top: 400px;
  }

  p, a {
    font-size: 17px;
  }
}