body {
  font-family: sans-serif;
  background-color: #f4f4f4;
  padding: 20px;
}
h1 {
  color: #333;
}
ul {
  list-style: none;
  padding: 0;
}
li {
  background: #fff;
  margin-bottom: 10px;
  padding: 15px;
  border-radius: 5px;
}