JSFiddle - React, Tailwind, and code Playground
JavaScript
$('.blankSelect option:first').after($('<option />', { "value": '', text: '', class: '' }));
$(".firstSelect").change(function(){
$(".secondSelect").val($(".secondSelect option:first").val());
});
$(".secondSelect").change(function(){
$(".firstSelect option:first-child").attr("selected", true);
});