body {
  font-family: sans-serif;
  text-align: center;
  background: #f9f9f9;
}

button {
  margin: 5px;
  padding: 10px 20px;
  font-size: 16px;
}

.track {
  margin-top: 20px;
  border-bottom: 1px solid #ccc;
  padding-bottom: 10px;
}