.App {
  max-width: 80em;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto auto;
  grid-template-columns: 1fr 2fr;
}

.App-general {
  grid-area: 1 / 1 / 2 / 3;
}

.App-editor {
  grid-area: 2 / 1;
}

.App-renderer {
  grid-area: 2 / 2 / 3 / 3;
  box-shadow: 2px 2px 5px red;
  position: relative;
}
.App-renderer > svg {
  position: absolute;
  top: 0;
  left: 0;
  width:  100%;
  height: 100%;
}

.App-overlay {
  width:  100%;
  height: 100%;
}