body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
  background: #f6f6f6;
}
#app {
  padding: 1rem;
}
#controls {
  margin-bottom: 1rem;
}
input[type="text"] {
  width: 200px;
  padding: 0.5rem;
}
button {
  padding: 0.5rem;
  margin-left: 0.5rem;
}
.folder, .note {
  margin-left: 1rem;
}