.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    Segoe UI,
    Roboto,
    Oxygen,
    Ubuntu,
    Cantarell,
    Open Sans,
    Helvetica Neue,
    sans-serif;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  padding: 0;
  background-color: #f9f9f9;
}