body
{
  background-color: white;
  color: black;
  margin: 0px;
}

h1
{
  border-bottom: solid 2px lightgray;
  text-align: center;
}

h2
{
  color: blue;
  background-color: lightblue;
}

h3
{
  color: blue;
  background-color: lightblue;
}