@import './pages/board.scss';
@import './pages/home.scss';

.app-root {
  background-color: #ccccff;
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

@import './pages/board.scss';
@import './pages/home.scss';

.app-root {
  background-color: #ccccff;
  width: 100%;
  height: 100vw;
  position: absolute;
  top: 0;
  left: 0;
}

Make sure background extends as far down as the page does
Make sure background extends as far down as the page does