body {
  font-family: Arial, sans-serif;
  max-width: 720px;
  margin: 40px auto;
  padding: 0 16px;
  color: #222;
}

header a {
  text-decoration: none;
  color: #222;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

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

form label {
  display: block;
  margin-top: 12px;
}

form input {
  width: 100%;
  padding: 8px;
  box-sizing: border-box;
}

form button {
  margin-top: 16px;
  padding: 8px 16px;
}