body {
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 30px;
  min-height: 100vh;
  font-family: sans-serif;
  background: #f5f5f5;
}

#app {
  background: white;
  padding: 0;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}