body {
  background: black;
  color: white;
}

header {
  text-align: center;
}

button, select {
  background: #888;
  color: gold;
}

button:disabled {
  color: grey;
}

dl.horizontal {
  border: 0.5em ridge grey;
  border-radius: 1rem;
  background-color: #444;
  display: flex;
  align-content: space-around;
  padding: 1em;
}

.horizontal dt {
  text-transform: uppercase;
  color: gold;
  flex: 0 1 auto;
  text-align: right;
  margin: 0 1em;
  padding: 0 0 0 1em;
  border-left: 4px ridge gold;
}

.horizontal dt:first-of-type {
  border-left: 0;
}

.horizontal dd {
  background: black;
  border: 1px solid white;
  flex: auto;
  text-align: left;
  margin: 0;
}

table {
  margin: 2rem auto;
  padding: 2rem;
  border: 1rem ridge grey;
  border-radius: 3rem;
}

td {
  border: 1px solid grey;
}

ul.vertical,
.vertical li {
  display: block;
}

#log {
  background: #444;
  border: 1px solid grey;
  display: block;
  color: white;
  font-size: large;
  font-family: monospace;
  width: 60%;
  margin: auto;
}

section h1 {
  display: block;
  font-size: large;
  text-align: center;
}