DevOps, CI/CD and Automation

I have a select list where I have put the placeholder code as:

<select id="SelIncludeInactRep" data-bind="ojComponent: {  component: 'ojSelect',

                                                            multiple: true,

                                                            value: includeInactRepVal,

                                                            placeholder: '--Select Value--',

                                                            rootAttributes: {style:'max-width:20em'}

                                                         }">

                    <option value="N">N</option>

</select>

I have put the default text in all my components as Arial, but I am not able to change the default text family of the placeholder text ('--Select Vale--' in this case) to arial. Would be grateful if someone can give me the css change that I need to do to change the text font to arial for the placeholder text.

Thanks in advance.