  <div class="diff_option_list">
                        <div class="diff_op" id="easy" onclick="make_board_diff(this)">Easy</div>
                        <div class="diff_op" id="medium" onclick="make_board_diff(this)">Medium</div>
                        <div class="diff_op" id="hard" onclick="make_board_diff(this)">Hard</div>
                    </div>
                    
                </div>
                <div class="hint_cont difficulty_cont">
                    <div class="diff_heading">