body {
  margin: 0;
  font-family: Arial, sans-serif;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #55efc4, #81ecec);
}

.box {
  text-align: center;
  background: white;
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 0 15px rgba(0,0,0,0.2);
}

input, button {
  padding: 10px;
  font-size: 16px;
  margin-top: 10px;
}

button {
  border: none;
  background: #00b894;
  color: white;
  border-radius: 8px;
  cursor: pointer;
}