body {
            font-family: Arial, sans-serif;
            background-color: #f8f9fa;
            color: #343a40;
            margin: 0;
            padding: 0;
        }
        .button-container {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 1000;
        }
        #themeButton {
            padding: 10px 20px;
            background-color: #00d8a6;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
        }
        #overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
                background-color: rgb(0 0 0 / 93%);
            z-index: 1001;
        }
        #themePopup {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: #4f4f4f;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
            z-index: 1002;
        }
        #themePopup.active {
            display: block;
        }
        #themePopup h2 {
            margin: 0;
            padding-bottom: 10px;
            border-bottom: 1px solid #ccc;
        }
        #themePopup .themes select {
            width: 100%;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-size: 16px;
            margin-top: 10px;
        }
        #themePopup .themes button {
            padding: 10px 20px;
            background-color: #007bff;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
            margin-top: 10px;
        }
        /* Button styles */
        .styled-button {
            padding: 10px 20px;
            background-color: #007bff;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
            outline: none; /* Remove outline on focus */
            transition: background-color 0.3s ease; /* Smooth transition for background color */
        }
        .styled-button:hover {
            background-color: #0056b3; /* Darker shade of blue on hover */
        }
        .styled-button:active {
            background-color: #0056b3; /* Darker shade of blue on click */
        }