body {
  font-family: "Microsoft Yahei", sans-serif;
  background-color: #f5f5f5;
  text-align: center;
  padding: 20px;
}

.container {
  background: white;
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

button {
  background: #16a34a;
  color: white;
  padding: 10px 20px;
  font-size: 16px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background: #15803d;
}

table {
  width: 100%;
  margin-top: 15px;
  border-collapse: collapse;
}

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

th {
  background: #f0f0f0;
}