.caption {
  text-align: center;
  font-size="80%";
  margin: 0 0 5px 0;
  display: none;
}

.cbegin {
  margin: 10px 100px 10px 100px;
  padding: 3px;
  text-align: center;
  border: 2px solid black;
}

table {
  border-collapse: collapse;
}
th {
  border-bottom: 1px solid;
}
td, th {
  padding-left: 10px;
  padding-right: 10px;
}
td {
  padding-top: 5px;
}
td+td, th+th {
  border-left: 1px solid;
}

pre code {
  font-size: 100%;
}

#TOC {
  display: block;
  margin-top: 10px;
  margin-left: 50px;
  margin-right: 50px;
  border: 1px solid #050778;
  color: #050778;
  background-color: #ffffff;
}

#TOC ul:before {
  display:block;
  color: black;
  font-weight: bold;
  text-align: center;
  content:"Problems";
}

#TOC a:link, #TOC a:visited {
  color: #050778;
}

#TOC a:hover, #TOC a:active {
  color: #803000
}

#TOC li {
  margin: 0;
  padding: 0;
}

.prompt {
  color: gray;
}

.output {
  color: blue;
}