html
{ background-color:Bisque;
  background-image:linear-gradient(90deg,BurlyWood,Bisque,Bisque,Bisque,BurlyWood); }

body
{ max-width:1000px;
  margin:auto;
  padding:15px;
  font-family:sans-serif; }

h1
{ background-color:Teal;
  background-image:linear-gradient(90deg,#004040,Teal,#004040);
  padding:10px;
  color:PaleTurquoise;
  text-align:center;
  font-style:italic;
  font-family:serif; }

h2
{ background-color:DarkCyan;
  background-image:linear-gradient(90deg,#006060,DarkCyan,#006060);
  padding:7px;
  color:PaleTurquoise;
  text-align:center;
  font-style:italic;
  font-family:serif; }

h3
{ background-color:#b3ffe6;
  background-image:linear-gradient(90deg,#66ffcc,#b3ffe6,#66ffcc);
  padding:5px;
  color:Teal;
  text-align:center;
  font-style:italic;
  font-family:serif; }

h4
{ background-color:PaleTurquoise;
  background-image:linear-gradient(90deg,#96e9e9,PaleTurquoise,#96e9e9);
  padding:3px;
  color:Teal;
  text-align:center;
  font-style:italic;
  font-family:serif; }