JSFiddle - React, Tailwind, and code Playground

HTML

<!--Wrapper div-->
<div id="wrapper">
    <!--Inbox list and button to add a card-->
    <div id="inboxList" class="cellContainer">
        <p style="display: inline">Inbox</p>
        <!--Button to add a Card-->
        <input type="button" id="AddCardBtn" value="+ Add a Card..." />
        <hr class="fancy-line" />
        <br/>
        <!--Card div-->
        <div id="userAddedCard">
            <br/>
            <div></div>
        </div>
    </div>
</div>
<!--Modal Dialog-->
<div id="modalDialog">
    <form>
        
        <input type="button" id="Getbtn" value="Get value" />
        <hr/>
        <br/>
        <label>Add checkBox</label>
        
        <br />
        <input type="text" id="checkBoxName" />
        <input type="button" id="btnSaveCheckBox" value="_Ok" />
        <div id="boxs"></div>
        <hr class="fancy-line" />
        
        
    </form>
</div>
<!--Reference to Jquery-->

CSS

/*Style of a body*/
 body {
    background-color: #f4f4f4;
}

.allcheckbox {
    border: 2px solid black;
    border-radius: 4px;
    margin-bottom: 10px;  
    width:80%;
    margin-left:auto;
    margin-right:auto;
        
}

.allcheckbox label
{
     word-wrap: break-word;
}

/*Style of a Wrapper*/
 #wrapper {
    margin-top: 3%;
    margin-right: 20%;
    height: 715px;
    min-width: 300px;
    min-height: 715px;
    background-color: #00CCFF;
    box-shadow: 7px 7px 7px #828282;
    border-radius: 6px;
}
/*Style of a inbox list*/
 #inboxList {
    width: 275px;
    height: 700px;
    background-color: #f0f0f0;
    border: 1px solid black;
    margin-left: 0.5%;
    margin-top: 0.4%;
    border-radius: 10px;
    box-shadow: 7px 7px 7px #828282;
    overflow: auto;
}
/*Style of a Modal Dialog*/
 #modalDialog {
    display: none;
    background-color: white;
    border: solid black 2px;
    border-radius: 10px;
    overflow: auto;
    box-shadow: 7px 7px 7px #828282;
}
/*Style of a card*/
 .cellContainer .sortable-div {
    background: whitesmoke;
    width: 260px;
    height: 150px;
    margin-left: 2.3%;
    border-radius: 10px;
    border: 2px solid black;
    box-shadow: 0px 7px 7px #828282;
    margin-bottom: 1%;
}

JavaScript

$(function () {
    // Click function to add a card
    var $div = $('<div />').addClass('sortable-div');
    
    var cnt = 0,
        $currentTarget;
    $('#AddCardBtn').click(function () {
        var $newDiv = $div.clone(true);
        cnt++;
        $newDiv.prop("id", "div" + cnt);

        $newDiv.data('checkboxes', []);

        $('#userAddedCard').append($newDiv);
        //      alert($('#userAddedCard').find("div.sortable-div").length);        
    });

    // Double click to open Modal Dialog Window
    $('#userAddedCard').dblclick(function (e) {
        $currentTarget = $(e.target);

        

        $('#modalDialog').dialog({
            modal: true,
            height: 600,
            width: 500,
            position: 'center'
        });
        return false;

    });
    
    $("#Getbtn").on("click", function () {
        
        $('#modalDialog').dialog("close");
    });

    // Add a new checkBox
    $('#btnSaveCheckBox').click(function () {
        addCheckbox($('#checkBoxName').val());
        $('#checkBoxName').val("");
    });

    function addCheckbox(name, status) {
        status = status || false;

        var container = $('#boxs');
        var inputs = container.find('input');
        var id = inputs.length + 1;
        var data = {
            status: status,
            name: name
        };

        var div = $('<div />', { class: 'allcheckbox' });
        $('<input />', {
            type: 'checkbox',
            id: 'cb' + id,
            value: name
        }).prop('checked', status).on('change', function () {
            data.status = $(this).prop('checked');
        }).appendTo(div); /* set checkbox status and monitor changes */

        $('<label />', {
            'for': 'cb' + id,
            text: name
        }).appendTo(div);

        div.appendTo(container);

        
    }

});