body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
}

.container {
  max-width: 600px;
  margin: 50px auto;
  padding: 20px;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#note-input {
  width: 70%;
  padding: 8px;
  margin-right: 10px;
}

button {
  padding: 8px 20px;
  cursor: pointer;
}

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

li {
  padding: 10px;
  background-color: #f9f9f9;
  margin-bottom: 5px;
  border-radius: 5px;
}