body {
  background-color: black;
  color: grey;
}

h1 {
  background-color: black;
  color: indigo;
}

h2 {
    background-color: black;
  color: crimson;
}

h3 {
    background-color: black;
  color: plum;
}

sub {
  background-color: black;
  color: darkgrey;  
}

li {
    background-color: black;
  color: gold;
}

div {
  background-color: black;
  color: grey;
}
mark { 
    background-color: pink;
  color: indianred;
}
a {
 color: indigo 
}
a:link{
  color: indigo;
}
a:visited{
  color: darkviolet;
}
a:hover{
  color: darkblue;
}
a:active{
  color: indigo;
}