Body {
  color: black;
  background-color: #C0FFFF;
  background-image: url(BG-color.jpg);
  background-attachment: fixed;
}
h1 {font-size: 1.5em; font-family: sans-serif;}
h2 {font-size: 1.2em; font-family: sans-serif;}
h3 {font-size: 1.0em; font-family: sans-serif;}
h4 {font-size: 0.8em; font-family: sans-serif;}