react-interview-code/src/App.css

.App-header {
  background-color: #222;
  text-align: center;
  height: 80px;
  padding: 20px;
  color: white;
}

.App-title {
  font-size: 1.5em;
}

h3 {
  margin: 2rem 0 1rem 0;
}

.finished-components {
  padding-bottom: 5rem;
}