body { font-family: Verdana, Arial, Helvetica, Geneva, SunSans-Regular, sans-serif; }
code { font-family: "Courier New", Courier, Monaco, monospace; }
pre { font-family: "Courier New", Courier, Monaco, monospace; }
.acronym-letter { font-size: 110%; }
.maintext { line-height: 1.3; }
.headnote { font-style: italic; }
.variable { font-weight: bold; color: green; }
.variable:before { content: "$"; }

img.centre {display:block;margin:0 auto;}
figcaption { font-style: italic; }