body {
  background-color: SlateGray;
}

h1 {
  color: navy;
  margin-left: 10px;
  font-size: 30px;
}
h2 {
  color: LightBlue;
  margin-left: 45px;
  font-size: 20px;
}
h3 {
  color: MediumSpringGreen;
  margin-left: 45px;
  font-size: 20px;
}
h4 {
  color: Red;
  margin-left: 45px;
  font-size: 20px;
}