body {
  margin: 0;
  font-family: sans-serif;
  background: #f9f9f9;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  overflow: hidden;
}

.app-container {
  z-index: 1;
  text-align: center;
  padding: 20px;
  background: white;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

input {
  width: 250px;
  padding: 10px;
  font-size: 16px;
  margin: 10px 0;
}

button {
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
}