body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background-color: #f5f5f5;
        }
        .container {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            width: 100%;
            max-width: 400px;
            position: relative;
        }
        #currentTime {
            position: absolute;
            top: 10px;
            right: 10px;
            font-size: 0.9em;
            color: #555;
        }
        h1 {
            text-align: center;
            color: #333;
        }
        input[type="text"], input[type="date"], input[type="time"] {
            width: calc(100% - 50px);
            padding: 10px;
            margin-bottom: 10px;
            border: 1px solid #ccc;
            border-radius: 4px;
        }
        button {
            padding: 10px;
            background-color: #007BFF;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        }
        button:hover {
            background-color: #0056b3;
        }
        ul {
            list-style: none;
            padding: 0;
        }
        li {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px;
            margin-bottom: 5px;
            background: #f9f9f9;
            border: 1px solid #ddd;
            border-radius: 4px;
        }
        .task-details {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 5px;
        }
        li button {
            margin-left: 5px;
            background-color: #dc3545;
        }
        li button.edit-deadline {
            background-color: #ffc107;
        }
        li button:hover {
            background-color: #a71d2a;
        }
        li button.edit-deadline:hover {
            background-color: #e0a800;
        }
        li .button-container {
            display: flex;
            gap: 5px;
            flex-shrink: 0;
        }