body {
  font-family: Arial, sans-serif;
  background-color: #f5f5f5;
  padding: 20px;
}

.container {
  max-width: 1200px;
  margin: auto;
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 10px #ccc;
}

h1, h2 {
  text-align: center;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

table, th, td {
  border: 1px solid #aaa;
}

th, td {
  padding: 8px;
  text-align: center;
}

button {
  padding: 8px 16px;
  margin: 10px 0;
  cursor: pointer;
}

input[type="number"], input[type="text"] {
  width: 100px;
}