.demo-main {
  border-bottom: 1px solid #dededb;
  background: #f0f1f4;
}

.demo-panel h2 {
  font-size: 40px;
}

.panel-intro {
  font-size: 16px;
  line-height: 1.6;
}

@media (max-width: 650px) {
  .demo-page .demo-panel h2 {
    font-size: 32px;
  }
}