body {
  color: cornsilk;
  font-family: Courier;
  text-align: center;
  background: #0F0F0F;
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed;
}

.main {
  width: 700px;
  padding: 20px 30px 20px 30px;
  margin: 15px auto auto auto;
  box-sizing: border-box;
}