body {
  font-family: 'Lato', sans-serif;
  font-size: 18px;
}

.page h1 {
  color: #009432;
}
.page h2 {
  color: #000099;
  font-size: 140%;
}
a {
  color: #3867d6;
}

.note {
  border-left: 4px solid #3867d6;
  color: #1e272e;
}

.image_expand {
  -webkit-box-shadow: 5px 5px 10px 0px rgba(0,0,0,0.5);
  -moz-box-shadow: 5px 5px 10px 0px rgba(0,0,0,0.5);
  box-shadow: 5px 5px 10px 0px rgba(0,0,0,0.5);
}

.interactive {
  text-align: center;
  border: 1px solid #2ecc71;
  border-radius: 2px;
  background: #ffffff;
}

li {
  padding: 0 0 0.4em 0;
}

code, code_math {
  display: inline;
}
code, pre, code_math {
  font-family: 'UbuntuMono', monospace;
  font-size: 107%;
  color: #778890;
}
xmp {
  font-family: 'UbuntuMono', monospace;
  font-size: 107%;
  color: #e67e22;
  border: 1px solid #e67e22;
}

.katex {
  font-size: 110% !important;
}

.cover_title {
  position: absolute;
  top: 580px;
  left: 47px;
  right: 0px;
  color: #0089cd;
  font-size: 240%;
  text-align: center;
  text-shadow: 1px 2px rgba(0,0,0,0.15);
}
.cover_subtitle {
  position: absolute;
  left: 57px;
  right: 0px;
  bottom: 45px;
  text-align: center;
  color: #0089cd;
  font-size: 220%;
  text-shadow: 1px 2px rgba(0,0,0,0.15);
}

.chap_text {
  position: absolute;
  right: var(--page-right-margin);
  top: 200px;
  color: #0089cd;
  font-size: 500%;
  text-shadow: 1px 2px rgba(0,0,0,0.15);
}
.chap_name {
  position: relative;
  display: table-cell;
  vertical-align: middle;
  text-align: center;
  left: 58px;
  width: 582px;
  top: 395px;
  height: 170px;
  color: #0089cd;
  font-size: 250%;
  text-shadow: 1px 2px rgba(0,0,0,0.15);
}