/* reset CSS */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f9;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

#todo-app {
  background-color: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  width: 300px;
}

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

input {
  width: 75%;
  padding: 10px;
  margin-right: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

button {
  padding: 10px;
  background-color: #4CAF50;
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 5px;
}

button:hover {
  background-color: #45a049;
}

#task-list {
  margin-top: 20px;
  list-style-type: none;
}

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

.task.complete {
  text-decoration: line-through;
  color: #888;
}

#sort-options {
  margin-top: 10px;
  text-align: center;
}

#sort-options button {
  margin: 0 5px;
}