body {
  font-family: system-ui, sans-serif;
  background: #f8f8f4;
  color: #222;
  margin: 2em auto;
  max-width: 1000px;
  line-height: 1.6;
}
th {text-align:left;
	vertical-align:top;
}
h1 {
  font-size: 2em;
  margin-top: 1.5em;
  border-bottom: 2px solid #ccc;
  padding-bottom: 0.2em;
  text-align: center;
}

h3 {
  font-size: 1.1em;
  margin-top: 0.8em;
  color: #444;
}

p {
  margin: 0em 0;
  padding: 0em 0;
}

div {
  margin: 5px 3px 5px 25px;
  padding: 5px 3px 5px 25px;
  border-radius: 5px;
  border-width: 1px;
  background-color: #f8f8f4;
  box-shadow: 2px 2px 15px rgba(0,0,0,0.75);
}
button {
  margin: 0px 5px 0px 5px;
  padding: 0px 20px 0px 20px;
  border-radius: 25px;
  border-width: 1px;
  background-color: #ffffff;
  box-shadow: 2px 4px 5px rgba(0,0,0,0.5);
}

.phi { background-color: #ffb0b0;}
.phy { background-color: #ffc880;}
.ind { background-color: #ffff80;}
.for { background-color: #c0ffc0;}
.hyperlink { background-color: #666666;
  margin: 0px 5px 0px 5px;
  padding: 0px 20px 0px 20px;
  border-radius: 25px;
  border-width: 1px;
  background-color: #bcbcbc;
  color: #000000;
  text-decoration: none;
  box-shadow: 2px 4px 5px rgba(0,0,0,0.5);
}
.bil { background-color: #c0c0ff;}
.zelle{margin: 0px 5px 0px 5px;}

b {
  font-weight: bold;
  color: #000;
}

figure {
  margin: 1.5em 0;
  text-align: center;
}

figcaption {
  font-size: 0.9em;
  color: #666;
}

video {
  display: block;
  margin: 1.5em auto;
}

.math {
  font-family: serif;
  font-size: 1.1em;
}

blockquote {
  border-left: 4px solid #ccc;
  margin: 1.5em 0;
  padding: 0.5em 1em;
  font-style: italic;
  color: #555;
  background: #fafafa;
}