body {
  background-image: url(../images/404/errepidea.jpg);
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  background-color:#464646;
  font-family: sans-serif;
}

.container {
  display: table;
  padding-top: 20%;
  width: 100%;
}

.content {
  display: table-cell;
  vertical-align: middle;
  text-align: center;
}

.button {
  color: black;
  border: none;
  border-radius: 5px;
  background-color: #f1f1f1;
  padding: 16px 30px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-family: sans-serif;
  font-size: 16px;
  box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
}

.button:hover {
  background-color: black;
  color: white;
}

footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    color: white;
}

@media only screen and (max-width: 767px) {
  body {
    background-image: url(../images/404/errepidea.jpg);
  }

  .container {
    padding-top: 10%;
  }
}