body {
  font-family: Arial, sans-serif;
  background: url("https://thumbs.dreamstime.com/z/to-do-list-seamless-pattern-background-business-flat-vector-ill-to-do-list-seamless-pattern-background-business-flat-vector-106532443.jpg") no-repeat center center fixed;
  background-size: cover;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.todo-container {
  background: rgba(255, 255, 255, 0.9); 
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  width: 350px;
}

h2 {
  text-align: center;
  margin-bottom: 15px;
  color: #333;
}

.input-box {
  display: flex;
  margin-bottom: 15px;
}

.input-box input {
  flex: 1;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 8px;
  outline: none;
}

.input-box button {
  margin-left: 8px;
  padding: 10px 15px;
  background: #4CAF50;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.input-box button:hover {
  background: #45a049;
}

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

ul li {
  background: #f9f9f9;
  padding: 10px;
  margin-bottom: 8px;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

ul li.completed {
  text-decoration: line-through;
  color: #888;
}

.delete-btn {
  background: #ff4d4d;
  border: none;
  color: white;
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
}

.delete-btn:hover {
  background: #e60000;
}