html,
body {
  margin: 0;
  height: 100%;
}
body {
  box-sizing: border-box;

  background: linear-gradient(110deg, #fdcd3b 50%, #ffed4b 50%);
}


#app{

    min-height: 300px;
    background :white;

    max-width: 400px;

    margin: auto;

    margin-top: 40px;

    padding: 40px;
    border-radius: 20px;
}