body {
  font-family: Arial;
  background: #f5f5f5;
  padding: 30px;
}

.add-section input, select {
  padding: 8px;
  margin-right: 10px;
}

button {
  padding: 8px 15px;
  cursor: pointer;
}

.task {
  background: black;
  color: white;
  padding: 10px;
  margin: 10px 0;
  display: flex;
  justify-content: space-between;
}

.completed {
  background: white;
  color: black;
  border: 1px solid black;
}