textarea { min-width:75%;max-width:100%;} 
header, main, footer { margin-bottom:1cm;}
header { border-bottom-style: dotted;}
footer { border-top-style: dotted; margin-top:1cm;}
body { font-family: sans-serif; margin-left:0.5cm;}
h1,h2,h3,h4,h5,h6 { margin-top:5pt;margin-bottom:3pt;font-weight:normal;font-family:sans-serif}
.hideable { background-color:#ff9999;}
main a { display:inline-block;min-width:1cm;}
main li { width:35%;}
li { margin-left:1cm;}
details { cursor:pointer;text:yellow;}
h2.question { font-size:14pt;font-weight:normal;}
h3.answer { font-size:12pt;font-style:oblique; font-weight:normal;}
.link { text-decoration:none;background-color:blue;}
.download { text-decoration:none;}
.explain { position:absolute;right:0cm;width:60%;}
.ocm { display:inline-block;width:1cm;}
.tcm { display:inline-block;width:2cm;}