tolaria/src/App.css

.app {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

.app__sidebar {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.app__sidebar > * {
  flex: 1;
}

.app__note-list {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.app__note-list > * {
  flex: 1;
}

.app__editor {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.app__editor > * {
  flex: 1;
}

.app__inspector {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.app__inspector > * {
  flex: 1;
}