body {
  font-family: Arial, sans-serif;
  background-color: whitesmoke;
  margin: 0;
  padding: 20px;
  text-align: center;
  color: black;
}

h1 {
  color: dimgray;
  margin-bottom: 6px;
}

h2 {
  color: gray;
  margin-bottom: 14px;
}

table {
  width: 55%;
  margin: 0 auto 18px;
  border-collapse: collapse;
  background-color: white;
}

th, td {
  padding: 6px;
  border: 1px solid lightgray;
  text-align: center;
  font-size: 0.9rem;
}

th {
  background-color: gainsboro;
  font-weight: bold;
}

button {
  padding: 4px 10px;
  font-size: 0.8rem;
  cursor: pointer;
  background-color: steelblue;
  color: white;
  border: none;
}

button:hover {
  background-color: royalblue;
}

#details {
  width: 55%;
  margin: 0 auto;
  background-color: white;
  padding: 15px;
  border: 1px solid lightgray;
  text-align: left;
}

#details h2 {
  text-align: center;
  margin-bottom: 12px;
}

#details p {
  display: grid;
  grid-template-columns: 120px 1fr;
  margin: 6px 0;
  font-size: 0.9rem;
}

#details strong {
  color: dimgray;
}

.hidden {
  display: none;
}

@media (max-width: 768px) {
  table,
  #details {
    width: 95%;
  }
}