/* Add styling for background color, text color, etc. */

html {
  background-color: azure;
}

header {
  background-color: aqua;
  padding: 20px;
  text-align: center;
}

h1 {
  font-size: 40px;
  margin-bottom: 10px;
}

h2 {
  font-size: 20px;
  margin-bottom: 10px;
}

#high-score {
  text-align: left;
}

.viewport {
  display: block;
  text-align: center;
  margin: 30px;
  background-color: aquamarine;
  padding: 20px;
}

footer {
  display: block;
  background-color: azure;
  margin: 20px;
  padding: 20px
}

button {
  margin: 5px;
  padding: 2px;
}

.start {
  margin-bottom: 10px;
}