-border-radius: 4px;
            border-radius: 4px;
        }

        .button:hover {
            background-color: #CCC;
            color: #444;
        }

        .button:active {
            background-color: #666;
            color: #eee;
        }

        .blue {
            background-color: #007BFF;
        }

        .deep-blue {
            background-color: #0056B3;
        }

        .green {
            background-color: #28A745;
        }

        .grey {
            background-color: #6C75