#e404 {
  padding: 200px 15px 80px !important;
  background-color: #fff;
}
@media screen and (max-width: 768px) {
  #e404 {
    padding-top: 80px !important;
  }
}
#e404 em {
  display: block;
  font-size: 200px;
  text-align: center;
  line-height: 1;
}
#e404 em span {
  display: block;
  font-size: 80px;
  letter-spacing: -0.05em;
}
@media screen and (max-width: 768px) {
  #e404 em {
    font-size: 140px;
  }
  #e404 em span {
    font-size: 50px;
  }
}
#e404 p {
  margin-top: 3em;
  font-size: 16px;
  text-align: center;
}
#e404 p a {
  display: inline-block;
  min-width: 180px;
  margin: 30px auto 0;
  padding: 0 15px;
  color: #fff;
  font-size: 18px;
  text-align: center;
  line-height: 50px;
  vertical-align: top;
  background-color: #333;
  text-decoration: none;
  transition: opacity 0.7s;
}
#e404 p a:hover {
  text-decoration: none;
  opacity: 0.6;
}
@media screen and (-webkit-min-device-pixel-ratio: 0) and (max-width: 768px) {
  #e404 p a:hover {
    opacity: 1;
  }
}
#e404 p a:hover img {
  opacity: 1;
}