body { background-image: url(../chemistry.gif);
       background-attachment: fixed }

h1 { color: purple }
h2 { color: darkmagenta }
p { color: purple; font-weight: bold }

li { color: purple; font-weight: bold }

table { background-color: azure }

td {color: darkviolet }

th {color: darkviolet }

 a:link { color:darkred }
 a:visited { color:darkred }