body {
  font-family: Arial, sans-serif;
  background-color: #f0f4f8;
  display: flex;
  justify-content: center;
  margin-top: 50px;
}

.container {
  background-color: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 0 15px rgba(0,0,0,0.1);
  width: 400px;
}

h2 {
  text-align: center;
  color: #333;
}

.input-section {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

input {
  flex: 1;
  padding: 10px;
  font-size: 16px;
  border-radius: 10px;
}

button {
  padding: 10px 15px;
  font-size: 16px;
  cursor: pointer;
  background-color: #4caf50;
  color: white;
  border: none;
  border-radius: 5px;
}

ul {
  list-style: none;
  padding: 0;
}

li {
  background: #f7f7f7;
  padding: 10px;
  margin-bottom: 8px;
  border-radius: 5px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

li.completed {
  text-decoration: line-through;
  color: gray;
}
#deleteAll {
  background-color: #e74c3c;
  border: none;
  color: white;
  padding: 5px 10px;
  cursor: pointer;
  border-radius: 3px;
}
#todoList {
  border: 1px solid #ddd;
  padding: 15px;
  margin: 10px 0;
  border-radius: 8px;
  background: #f9f9f9;
}