body {
  font-family: Arial;
  background: #f4f6f8;
  text-align: center;
  padding: 20px;
}

input {
  padding: 10px;
  width: 200px;
}

button {
  padding: 8px 10px;
  margin: 5px;
  cursor: pointer;
}

ul {
  list-style: none;
  padding: 0;
}

li {
  background: white;
  margin: 10px auto;
  padding: 10px;
  width: 300px;
  display: flex;
  justify-content: space-between;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}