.input-group {
        margin-bottom: 20px;
    }

    #canvas-container {
        display: none;
        margin: 20px auto;
    }

    #canvas {
        border: 2px solid #fff;
    }

    #progress-bar {
        display: none;
        width: 100%;
        height: 20px;
        background-color: #f3f3f3;
        margin: 20px auto;
        border-radius: 50px;
    }

    #progress-bar-inner {
        height: 100%;
        width: 0;
        background-color: #8DF14D;
        text-align: center;
        line-height: 20px;
        color: white;
    }

    #success-message {
        display: none;
        margin-top: 20px;
        font-size: 18px;
        color: #fff;
    }

    #imgsec {
        padding: 22px;
        width: 94%;
        margin: 11px auto;
        border: 10px double #fff;
        background: #FFD9DF;
        box-shadow: rgba(17, 17, 26, 0.1) 0px 0px 16px;
        border-radius: 12px;
    }
     #convert-btn, #refresh-btn {
            display: none; /* Initially hidden */
            width: 100%; /* Full width */
            max-width: 300px; /* Optional: Maximum width for the button */
            margin: 0 auto; /* Center the button */
            padding: 10px 20px; /* Padding for the button */
            font-size: 16px;
            font-weight: bold;
           
            text-align: center;
            cursor: pointer;
            transition: background-color 0.3s ease, transform 0.2s ease;
        }

        #convert-btn:hover, refresh-btn:hover {
            background-color: #0056b3;
            transform: scale(1.05);
        }

        #convert-btn:active, #refresh-btn:active {
            background-color: #004085;
        }