body{ background-color: aliceblue; width:1000}

.std{line-height: 180%; text-indent: 16pt; margin-left: 4%}
.nin{line-height: 180%; margin-left: 4%}
.comment {margin-left: 8%; line-height: 180%; padding:5px; border:1px solid gray; background-color:lightskyblue;}
.progstyle {border: solid 1px; padding: 5px; margin-left:4%; background-color: paleturquoise; line-height: 150%; }
.note {MARGIN-LEFT: 8%; LINE-HEIGHT: 180%; padding:5px; border:1px solid gray; background-color:linen;}
.equation{margin-left: 6%}
.experiment {border: solid 1px; padding: 5px; margin-left:4%; background-color: azure; line-height: 150%; }

.xtable
{
  margin-left: 5%;
  border: 1px solid black;
  border-collapse: collapse;
  text-align: center;
}
.xtable td{
  border: 1px solid black;
   width: 5em;
}
.xtable td:first-child {
   width: 8em;
}

li {padding: 5px}

H1 {
	COLOR: teal;}
H2 {
	COLOR: maroon;}
H3 {
	COLOR: sienna;}
H4 {
	COLOR: darkmagenta
;}