JSFiddle - React, Tailwind, and code Playground
HTML
<span id="MENU1" class="active" onclick="showHide('1');"><center>1</center></span>
<span id="MENU2" onclick="showHide('2');"><center>2</center></span>
<span id="MENU3" onclick="showHide('3');"><center>3</center></span>
<span id="MENU4" onclick="showHide('4');"><center>4</center></span>
<div id="CONTAINER"></div>
CSS
.active{
color:#FF6a00;
background: red;
background-repeat:round;
background-size:cover;
}
.inactive{
color:black;
background: green;
background-repeat:round;
background-size:cover;
}
JavaScript
function showHide(divId){
$("span").removeClass("active");
var id = "MENU" + divId;
var theDiv = document.getElementById(id);
$(theDiv).addClass("active");
var data = "<div id='CONTENT'" + divId + ">here somehow wil appear content " + divId + "</div>";
var print = document.getElementById("CONTAINER");
print.innerHTML = data;
}