* {
  margin: 0;
  padding: 0;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
}
header {
  height: 100px;
  background-color: black;
}
.container {
  height: 600px;
  border-radius: none;
  background: linear-gradient(145deg, #333232, #3d3b3b);
  box-shadow: 5px 5px 0px #171616, -5px -5px 0px #5b5858;
}
footer {
  height: 81px;
  background-color: black;
  margin: 0;
  padding: 0;
}
h1 {
  text-align: center;
  color: white;
}