style.css

body {
    width: 300px;
    font-family: Arial, sans-serif;
  }
  
  .header {
    text-align: center;
    margin-bottom: 20px;
    color: #3498db;
  }
  
  .remove-all-button {
    background-color: #ff0000;
    color: #ffffff;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;    
  }
  

  .remove-all-button:hover {
    background-color: #cc0000;
    transform: scale(1.05);
  }
  
  .task-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px;
    margin-bottom: 8px;
    background-color: #f2f2f2;
    border-radius: 4px;
    transition: transform 0.3s ease, opacity 0.3s ease, text-decoration 0.3s ease;
  }

  @keyframes selectTask {
    0%, 100% {
      transform: scale(1);
    }
    50% {
      transform: scale(1.05);
    }
  }
  
  @keyframes heartbeat {
    0% {
      transform: scale(1);
    }
    50% {
      transform: scale(1.2);
    }
    100% {
      transform: scale(1);
    }
  }

  .task-list-item.selected {
    background-color: #f2f2f2;
    animation: selectTask 0.3s ease-in-out;
  }
  .task-list-item.removing {
    transform: translateX(100%);
    opacity: 0;
    text-decoration: line-through;
    animation: heartbeat 0.5s ease-in-out;
  }
  .task-list-item:hover {
    transform: translateX(5px);
  }
  .task-form input {
    width: 70%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
  }
  
  .task-form button {
    padding: 8px 12px;
    background-color: #3498db;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
  }
  
  ul {
    list-style-type: none;
    padding: 0;
  }
  
  li {
    display: flex;
    align-items: center;
    margin: 5px 0;
    border-bottom: 1px solid #ddd;
    padding-bottom: 5px;
  }
  
  .task-checkbox {
    margin-right: 10px;
  }
  
  .footer {
    text-align: center;
    margin-top: 20px;
  }
  
  .add-button {
    background-color: #007bff;
    color: #ffffff;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;
  }
  
  .add-button:hover {
    background-color: #0056b3;
    transform: scale(1.05);
  }