html, body {
  height: 100%;
}

body {
  position: absolute;
  width: 100%;
}

h1 {
  font-size: 200px;
  font-weight: 600;
}

h4 {
  font-size: 40px;
  font-weight: 600;
}

#container {
  position: relative;
  top: 50%;
  transform: translateY(-50%);
}

#container p {
  font-size: 20px;
  margin-top: 15px;
  opacity: 0.6;
}

.btn-home {
  display: inline-block;
  background: transparent;
  border: solid 1px #333;
  border-radius: 30px;
  font-size: 20px;
  padding: 15px 40px;
  text-transform: uppercase;
  margin-top: 30px;
}

.btn-home:hover {
  text-decoration: none;
}

.back-link {
  display: block;
  font-size: 18px;
  margin-top: 15px;
}