body {
  background-color: #00c780;
  display: flex;
  justify-content: center;
}

.operationPanel {
  background-color: white;
  width: 300px;
  padding: 30px;
  margin-top: 50px;
  border-radius: 20px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.inputArea {
  display: flex;
  border-radius: 25px;
  overflow: hidden;
}

.inputBox {
  flex-grow: 1;
  border: none;
  background-color: #f0f4f8;
  padding: 10px 15px;
  outline: none;
}

.button {
  background-color: #00c780;
  border: none;
  color: white;
  padding: 10px 15px;
  cursor: pointer;
}

.todoList {
  list-style-type: none;
  padding: 0;
}

.todoList li {
  display: flex;
  padding: 10px 0;
  border-bottom: 1px solid #eee;
}

.todoList label {
  flex-grow: 1;
}

.checkbox {
  margin-right: 15px;
}

.trashcan {
  background: none;
  border: none;
  cursor: pointer;
  font-size: large;
  opacity: 0.5;
}

.trashcan:hover {
  opacity: 1;
}