body {
  font-family: system-ui;
  max-width: 900px;
  margin: 40px auto;
  padding: 0 16px;
}

h1 {
  color: #7a0000;
}

.box {
  background: #f5f5f5;
  padding: 16px;
  margin-bottom: 24px;
  border-radius: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 8px;
  border-bottom: 1px solid #ddd;
}