body {
  font-family: sans-serif;
  background: #f5f5f5;
  padding: 2em;
}

.container {
  max-width: 600px;
  margin: auto;
  background: white;
  padding: 2em;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

input[type=file] {
  margin-bottom: 1em;
}

.results {
  margin-top: 2em;
  background: #eef;
  padding: 1em;
  border-left: 5px solid #88f;
}