* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
nav {
  padding: 20px;
  border-bottom: 3px solid #ccc;
  margin-bottom: 6px;
}
body {
  padding-bottom: 90px;
}
h2 {
  margin-bottom: 0;
}
.nes-progress {
  height: 25px;
}