style.css

body {
  margin: 0;
  font-family: sans-serif;
}

main {
  width: 80ch;
  margin: 0 auto;
}

h1 {
  text-align: center;
  font-weight: lighter;
  margin-top: 3em;
  margin-bottom: 2em;
}

input,
textarea {
  font-family: monospace;
  width: 100%;
  box-sizing: border-box;
}

textarea:read-only {
  background-color: #eee;
}

label,
input,
textarea {
  display: block;
}

label {
  margin-bottom: 1em;
}

form {
  margin-bottom: 2em;
}

table {
  width: 100%;
  border-radius: 0.2em;
  border-collapse: collapse;
}

thead, label {
  color: gray;
  font-size: 0.8em;
}

thead tr, thead td {
  border-bottom: 1px solid gray;
  padding-bottom: 0.5em;
}

tbody tr, tbody td {
  padding-top: 0.5em;
}

th {
  font-weight: normal;
  text-align: left;
}
td {
  text-align: right;
}