body {
  font-family: Arial, sans-serif;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

.controls {
  margin-bottom: 20px;
  padding: 20px;
  border: 1px solid #ddd;
  background-color: #f5f5f5;
  border-radius: 5px;
}

button {
  margin: 10px 5px;
  padding: 10px 20px;
  font-size: 16px;
  background-color: #007cba;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #005a87;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

.results-table th,
.results-table td {
  border: 1px solid #ddd;
  padding: 10px;
  text-align: left;
}

.results-table th {
  background-color: #f2f2f2;
  font-weight: bold;
}

.results-table tr:nth-child(even) {
  background-color: #f9f9f9;
}

.log {
  margin-top: 20px;
  padding: 10px;
  border: 1px solid #ccc;
  background-color: #f9f9f9;
  font-family: monospace;
  height: 200px;
  overflow-y: auto;
}

.success {
  color: green;
}

.error {
  color: red;
}

.info {
  color: blue;
}

.how-to-use {
  background-color: #e8f4f8;
  border-left: 4px solid #007cba;
  padding: 15px 20px;
  margin-bottom: 20px;
  border-radius: 5px;
}

.how-to-use h3 {
  margin-top: 0;
  color: #005a87;
  font-size: 18px;
}

.how-to-use ol {
  padding-left: 20px;
  line-height: 1.6;
}

.how-to-use li {
  margin-bottom: 8px;
  color: #333;
}

.how-to-use .note {
  background-color: #fff3cd;
  border: 1px solid #ffeaa7;
  border-radius: 4px;
  padding: 10px;
  margin-top: 15px;
  font-size: 14px;
}