body {
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: #f0f0f0;
  margin: 0;
}

.todo-container {
  background-color: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  width: 300px;
}

h1 {
  text-align: center;
  margin: 0 0 20px;
}

#new-task {
  width: 100%;
  margin-bottom: 20px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

#task-list {
  list-style-type: none;
  padding: 0;
}

.task-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px;
  border-bottom: 1px solid #ddd;
}

.task-item.completed .task-text {
  text-decoration: line-through;
  color: #999;
}

.task-text {
  flex-grow: 1;
  padding-left: 10px;
}

.remove-btn {
  background: none;
  border: none;
  color: red;
  cursor: pointer;
  font-size: 18px;
}

.edit-input {
  flex-grow: 1;
  padding: 5px;
}