h1 {
  text-align: center;
}

.container {
  text-align: center;
}

.progress-container {
  width: 500px;
  height: 24px;
  border: 1px solid #222222;
  box-sizing: border-box;
  margin: 16px auto;
}

.progress {
  height: 100%;
  background-color: green;
}