header {
  height: 50px;
}
header h1 {
  text-align: center;
  padding: 50px 0;
}

main {
    width: auto;
    color: white;
    background-color: rgba(51, 47, 47, 0.8);
    box-shadow: 2px 4px 8px rgb(68, 67, 67);
    border-radius: 8px;
    text-align: center;
    padding: 50px 0;
    margin: 0 auto;
    position: relative;
    top: 100px;
  }