* {
  box-sizing: border-box;
}

.app {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  background: #ffffff;
  color: #333;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
}