Kendryte-dev-extension/view-src/App.css

.App {
  display: flex;
  height: 100vh;
  overflow: hidden;
  text-align: center;
}

.container {
  flex-grow: 1;
  overflow: scroll;
}

@keyframes App-logo-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}