div { margin:0; }

a { color:blue }

body { font-weight: normal; font-size: small; font-family: sans-serif; background-color: black; }

div.ps { color: #000000; background-color: #FFF000; }
div.ps a { color: #000000;}
div.d1 { color: #ffffff; background-color: black; }
div.d1 a { color: #ffffff;}
div.d2 { color: #000000; background-color: Yellow; }
div.d2 a { color: #000000;}