JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tbody>
        <tr>
            <td>
<span>Select type</span>

            </td>
            <td>
                <select class="dropdownstyle">
                    <option value="No Thanks">No Thanks</option>
                    <option value="Custom lid (200)">Custom lid (200)</option>
                </select>
            </td>
        </tr>
        <tr>
            <td>
<span>Select font</span>

            </td>
            <td>
                <select id="Select_Font">
                    <option value="Arial">Arial</option>
                    <option value="georgia">georgia</option>
                </select>
            </td>
        </tr>
        <tr>
            <td>
<span>enter text</span>

            </td>
            <td>
                <input type="text" id="Enter_Text">
            </td>
        </tr>
    </tbody>
</table>

JavaScript

$('#Select_Font, #Enter_Text').attr('disabled', 'disabled');
$('.dropdownstyle').change(function () {
    var present = $(this).val().match(/\Custom\b/gi) == null ? true : false;
    if(present){
    $('#Select_Font, #Enter_Text').attr('disabled', 'disabled');
    }
    else{
         $('#Select_Font, #Enter_Text').removeAttr('disabled');
    }
});