body {
  font-family: Arial, sans-serif;
  background-color: #f7f7f7;
  text-align: center;
  padding: 20px;
}

.container {
  background-color: #fff;
  padding: 20px;
  border-radius: 10px;
  display: inline-block;
  box-shadow: 0px 0px 10px #ccc;
}

input {
  padding: 10px;
  width: 200px;
  margin-right: 5px;
}

button {
  padding: 5px 10px;
  margin-left: 5px;
  cursor: pointer;
}

li {
  margin: 10px 0;
}