body {
    background-color: rgb(28, 154, 158);
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #2bb8b8;
  }
  
  .container {
    width: 400px;
    background-color: #0b3441;
    padding: 20px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
  }
  
  h1 {
    text-align: center;
  }
  
  input, select, button {
    width: 100%;
    padding: 8px;
    margin: 5px 0;
    font-size: 14px;
  }
  
  ul {
    list-style-type: none;
    padding: 0;
  }
  
  li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px;
    margin: 5px 0;
    background-color: #49612e;
    border-radius: 5px;
  }
  
  button.delete-btn {
    background-color: #e74c3c;
    color: rgb(148, 57, 57);
    border: none;
    cursor: pointer;
  }
  
  button.delete-btn:hover {
    background-color: #c0392b;
  }
  
  input[type="checkbox"]:checked {
    text-decoration: line-through;
  }
  
  input[type="date"] {
    width: calc(100% - 16px);
    padding: 8px;
    margin: 5px 0;
  }
  
  .completed {
    background-color: #7ed957;
  }
  
  .active {
    background-color: #64225b;
  }