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

h1 {
  text-align: center;
}

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

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

th {
  background: #f4f4f4;
}