JSFiddle - React, Tailwind, and code Playground

HTML

<div class="rating">
<a href="#" id="up" name="voite1">↑</a>
<a href="#" id="down" name="voite1">↓</a>
<span id="numb">37</span>
</div>

CSS

a {text-decoration:none;}

JavaScript

$(function(){
    var number = $('#numb').text();
    var btn = 1;
    var dtn = 1;

    $('#up').click(function(){
        if (btn<2){
        ++number;
        $('#numb').text(number).removeClass("red").addClass("blue");
        ++btn;
        --dtn;
        }
    });
    $('#down').click(function(){
        if (dtn<2){
        --number;
        $('#numb').text(number).removeClass("blue").addClass("red");
        ++dtn;
        --btn;
        }
    });
});