body {
  font-family: Arial;
  text-align: center;
  background: #f4f4f4;
}

.box {
  background: white;
  padding: 20px;
  margin: 20px auto;
  width: 300px;
  border-radius: 10px;
}

input {
  width: 90%;
  padding: 10px;
  margin: 5px;
}

button {
  padding: 10px;
  cursor: pointer;
}