body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  background-color: #f9f9f9;
}

.container {
  max-width: 600px;
  margin: 20px auto;
  padding: 20px;
  background-color: #ffffff;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1 {
  font-size: 24px;
  margin-bottom: 10px;
  color: #333333;
}

p {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
}

textarea {
  resize: vertical;
  width: 96%;
  height: 150px;
  margin-bottom: 10px;
  padding: 10px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

.input-group {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

label {
  flex: 1;
  font-size: 14px;
  color: #333333;
}

input {
  width: 100%;
  padding: 5px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  width: 90%;
  padding: 10px;
  font-size: 16px;
  background-color: #007bff;
  color: #ffffff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background-color: #0056b3;
}

h2 {
  font-size: 18px;
  color: #333333;
  margin-top: 10px;
  text-align: center;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

.result-table th, .result-table td {
  border: 1px solid #ccc;
  padding: 8px;
  text-align: left;
}

.result-table th {
  background-color: #f0f0f0;
  font-weight: bold;
}

.result-table td {
  background-color: #fff;
}

.error {
  color: red;
  font-weight: bold;
}