body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;background-color:#f0f2f5;color:#333;padding-top:50px}.app-container{max-width:600px;margin:0 auto;background-color:#fff;padding:2rem;border-radius:8px;box-shadow:0 4px 12px #0000001a}h1{text-align:center;margin-bottom:1.5rem}.add-task-form{display:flex;gap:10px;margin-bottom:1.5rem}.add-task-form input{flex-grow:1;padding:10px;border:1px solid #ddd;border-radius:5px;font-size:1rem}.add-task-form button{padding:10px 15px;background-color:#1a237e;color:#fff;border:none;border-radius:5px;cursor:pointer;font-size:1rem;transition:background-color .3s}.add-task-form button:hover{background-color:#283593}ul{list-style:none;padding:0}li{padding:12px;border-bottom:1px solid #eee;display:flex;justify-content:space-between;align-items:center}li:last-child{border-bottom:none}.remove-btn{background-color:#dc3545;color:#fff;border:none;padding:5px 10px;border-radius:4px;cursor:pointer;transition:background-color .3s}.remove-btn:hover{background-color:#c82333}