a {
  text-decoration: none;
  color: #81a2be;
}

body {
  font-family: 'DejaVu Sans Mono', monospace;
  margin: 40px auto;
  min-width: 80ch;
  max-width: 80ch;
  line-height: 1.5;
  font-size: 16px;
  background-color: #1d1f21;
  color: #c5c8c6;
  padding: 0 10px;
  text-align: left;
  overflow-y: scroll;
}

table, th, td {
  border: 1px solid #969896;
  border-collapse: collapse;
}

th, td {
  padding: 5px;
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}

span.left {
position: absolute;
left: 0;
}

span.right {
position: absolute;
right: 0;
}