:root{color-scheme:light}
body{margin:1rem auto;padding:0 1rem;max-width:80ch;background:#fff;color:#000;font:14px/1.5 ui-monospace,Menlo,Consolas,monospace}
h1,h2,h3{font-size:1em;font-weight:bold;margin:1.5em 0 .5em}
input,select,textarea,button{font:inherit;width:100%}
button{width:auto}
textarea{min-height:6em}
pre,.msg{white-space:pre-wrap}
label{display:block;margin-top:1em}
label small{display:block}