*{
  box-sizing: border-box;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

body {
  background-color: #f9f9f9;
  padding: 20px;
}

h1 {
  color: #333;
}

video {
  width: 100%;
  max-width: 600px;
  max-height: 400px;
  /*border: 2px solid #333;
  border-radius: 8px;*/
  display: block;
}

#result {
  font-size: 1.0rem;
  margin-top: 10px;
}