.container{max-width:500px;margin:50px auto;padding:20px;border:2px solid #ddd;border-radius:10px;box-shadow:0 0 10px #ccc;background-color:#f9f9f9;font-family:Arial,sans-serif}h1{text-align:center;color:#333}.input-section{display:flex;justify-content:space-between;margin-bottom:20px}.input-section input{flex:1;padding:8px;font-size:16px}.input-section button{padding:8px 15px;margin-left:10px;background-color:#4caf50;color:#fff;border:none;cursor:pointer;font-weight:700;border-radius:5px}.input-section button:hover{background-color:#45a049}.todo-list{list-style:none;padding:0}.todo-item{display:flex;align-items:center;margin-bottom:10px}.completed{text-decoration:line-through;color:#888;margin-left:5px}.done-label{margin-left:10px;color:green;font-weight:700}.edit-btn,.delete-btn{margin-left:10px;padding:3px 7px;font-size:14px;border:none;border-radius:5px;cursor:pointer}.edit-btn{background-color:#2196f3;color:#fff}.edit-btn:hover{background-color:#1976d2}.delete-btn{background-color:#f44336;color:#fff}.delete-btn:hover{background-color:#d32f2f}