body {
  font-family: Arial, sans-serif;
  margin: 20px;
}

h1 {
  text-align: center;
}

.container {
  margin-top: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.file-input {
  margin-right: 10px;
}

.convert-button {
  padding: 8px 20px;
  background-color: #4caf50;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.convert-button:hover {
  background-color: #45a049;
}