html, body {
  margin: 0;
  width: 100%;
  height: 100%;
}

body {
  font-size: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

table {
  border-collapse: collapse;
}

th, td {
  border: 1px solid black;
  padding: 8px;
  text-align: left;
}

th {
  background-color: #f2f2f2;
}

code {
  user-select: all;
}