body {
  font-family: Arial, sans-serif;
  margin: 2rem;
  background-color: #f9f9f9;
}

h1 {
  color: #333;
}

input[type="file"] {
  margin-top: 1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 2rem;
}

th, td {
  border: 1px solid #ccc;
  padding: 0.5rem;
  text-align: left;
}

th {
  background-color: #eee;
}

#log {
  margin-top: 1rem;
  white-space: pre-wrap;
  font-family: "Courier New", Courier, monospace;
  background: #fff;
  padding: 1rem;
  border: 1px solid #ccc;
}

.error {
  color: red;
}