body {
  font-family: serif;
  --main-background: #fff;
  --main-foreground: #333;
  --toolbar-background-hover: #eee;
  --toolbar-background-active: #ccc;
  --toolbar-border: rgba(12, 12, 13, 0.2);
  --toolbar-box-shadow: rgba(12, 12, 13, 0.1);
  --anchor-link: darkblue;
}

.background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--main-background);
  z-index: -1;
}

.content {
  max-width: 50em;
  padding: 1em;
  margin: auto;
  margin-top: 1em;
  margin-bottom: 1em;

  /*
  border-radius: 4px;
  box-shadow: 0 0 0 1px #cacaca,0 0 0 4px #eee;
  */

  border: 1px solid var(--toolbar-border);
  border-radius: 6px;
  box-shadow: 0 2px 8px var(--toolbar-box-shadow);

  line-height: 1.9;

  background-color: var(--main-background);
  color: var(--main-foreground);
}

.mono {
  font-family:'Cascadia Code Webfont';
}

div.figure {
  display: inline-block;
  text-align:center;
  margin: 1em;
  max-width: min(100%, 30em);
  padding: 0;
  overflow-x:hidden;
  border: 1px solid var(--toolbar-border);
  border-radius: 8px;
  box-shadow: 0 4px 8px 0 var(--toolbar-box-shadow), 0 6px 20px 0 var(--toolbar-box-shadow);
}

div.figure .caption {
  display: block;
  max-width: 100%;

  margin: auto;
  padding: .5em;
}

div.figure img {
  display: block;
  width: 110%;
  margin: 0;
}

footer {
  /*display: flex;
  align-items: center;
  flex-wrap: wrap;*/
  display: block;
  padding-top: 1em;
  border-top: 1px solid var(--toolbar-border);
  text-align: right;
} 

h1 {
  text-align: center;
  margin: 0 auto .5em auto;
}

h3 {
  border-bottom: 1px solid var(--toolbar-border);
}

hr {
  height: 0;
  border: none;
  border-bottom: 1px solid var(--toolbar-border);
}

p {
  margin: 1em;
}

li {
  margin: 0.3em;
}

a {
  color: var(--anchor-link);
}

a.breakable {
  overflow-wrap: break-word;
  word-wrap: break-word;
}

footer div {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
}

.validation-icons {
  margin-left:auto;
  text-align:right;
}

.footer-author {
  display: block;
  margin-left:auto;
  text-align:right;
}

.validation-icons ~ .footer-author {
  margin-left: 0;
}

.nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  text-align: center;
  padding: 0;
  margin: 0;
  margin-bottom: 1em;
}

.prose-box-link-ctnr {
  display: flex;
  align-items: center;
  text-align: center;
  margin: auto;
  margin-top: .4em;
  margin-bottom: .9em;
  max-width: 100%;
  overflow-x: hidden;
}

.box, .box-link {
  text-decoration: underline;
  display: inline-block;
  align-items: center;
  /*inline-block;*/

  background-color: var(--main-background);

  padding: .3em;
  margin: auto;

  border: 1px solid var(--toolbar-border);
  border-radius: 6px;
  box-shadow: 0 2px 8px var(--toolbar-box-shadow);
  overflow-x: hidden;
}

.box-link a {
}

.box {
  display: flex;
  flex-direction:row;
  align-items: center;
  flex-wrap: wrap;
  margin: .2em;
}

a.box-link {
  cursor: pointer;
}

.box-link {
  text-decoration: underline;
  display: block;
}

.nav a.box-link {
  margin: 0.2em;
  font-variant: small-caps;
  text-decoration: none;
}

footer .box-link, footer .box {
  text-decoration: none;
  font-variant: small-caps;
}

.box-link:hover {
  background-color: var(--toolbar-background-hover);
}

.i-am-having-fun-cb {
  display: none;
}

.lbl {
  cursor: pointer;

  display: inline-block;
  text-decoration: none;
  font-variant: small-caps;
  padding: 4px;
  margin: .2em
}

#defaultfont-rb:checked ~ * {
  font-family: inherit;
  font-weight: normal;
}

#monofont-rb:checked ~ * {
  font-family: 'Cascadia Code Webfont';
  line-height: 2.1;
}

#dyslexicfont-rb:checked ~ * {
  font-family: OpenDyslexic;
  font-weight: normal;
  line-height: 2.1;
}

footer label.lbl {
  background-color: var(--main-background);
}

#maxwidth-cb:checked ~ .content {
  max-width: 100%;
  box-shadow: none;
  border: none;
  padding: 1em;
}

#sepia-cb:checked ~ * {
  --main-background: #f4ecd8;
  --main-foreground: #5b4636;
  --toolbar-border: rgba(19, 14, 11, 0.2);
  --toolbar-border-shadow: rgba(19, 14, 11, 0.1);
  --toolbar-background-hover: #e4dcc8;
  --toolbar-background-active: #d4ccb8;
}

#defaultfont-rb:checked ~ footer .defaultfont-rb {
  background-color: var(--toolbar-background-active);
}

#monofont-rb:checked ~ footer .monofont-rb {
  background-color: var(--toolbar-background-active);
}

#dyslexicfont-rb:checked ~ footer .dyslexicfont-rb {
  background-color: var(--toolbar-background-active);
}

#maxwidth-cb:checked ~ footer .maxwidth-cb {
  background-color: var(--toolbar-background-active);
}

#sepia-cb:checked ~ footer .sepia-cb {
  background-color: var(--toolbar-background-active);
}

.link-to-top {
  text-decoration: none;
}

@media only screen and (max-width: 50em) {
  .content {
    border: none;
    border-radius: 0;
    box-shadow: none;
  }

  div label.maxwidth-cb {
    background-color: var(--toolbar-background-active);
  }
}