body {
  font-family: Arial, sans-serif;
  padding: 20px;
}

header {
  text-align: center;
  padding: 20px;
  margin-bottom: 20px;
  border: 1px solid #000;
  background-color: #ffff99;
}

header h1 {
  margin: 0;
}

.container {
  max-width: 600px;
  margin: 0 auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid #000;
}

thead {
  border-bottom: 1px solid #000;
  background-color: #ffff99;
}

thead th {
  padding: 10px;
  text-align: left;
  border-right: 1px solid #000;
}

thead th:last-child {
  border-right: none;
}

tbody td {
  padding: 10px;
  border-right: 1px solid #000;
  border-bottom: 1px solid #000;
}

tbody td:last-child {
  border-right: none;
}

td h3 {
  margin: 0;
}