body {
  margin: 0;
  font-family: helvetica, arial, sans-serif;
  line-height: 1.417;
}
.header h1 {
  line-height: 70px;
  font-size: 32px;
  border-bottom: 2px solid grey;
  text-align: center;
  margin: 0;
  font-weight: normal;
}

#app {
  padding: 10px 20px;
}

.example {
  padding: 20px 0;
  border-bottom: 1px solid #eee;
}