body {
  padding: 20px;
  background-color: #f8f9fa;
}
#todo-list {
  list-style: none;
  padding: 0;
  max-width: 600px;
  margin: 20px auto;
}
.todo-item {
  padding: 12px 15px;
  margin-bottom: 8px;
  background-color: white;
  border: 1px solid #dee2e6;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.todo-item:hover {
  background-color: #f1f1f1;
}
.todo-item.completed {
  text-decoration: line-through;
  color: #6c757d;
  background-color: #e9ecef;
}
.delete-btn {
  color: #dc3545;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2em;
}
.add-task-container {
  max-width: 600px;
  margin: 20px auto;
}