JSFiddle - React, Tailwind, and code Playground

HTML

<a class="app1_text app-const-text">БЛОГ</a>
<a class="app1_text app-const-text">БЛОГ</a>
<a class="app1_text app-const-text">БЛОГ</a>
<a class="app1_text app-const-text">БЛОГ</a>

CSS

a {
  color: black;
	display:block;
}
.orange {
  color: orange;
}
a:hover {
  color:#ff2e5a;
  cursor:pointer;
}

JavaScript

var app1_text = document.querySelectorAll(".app1_text");
function go() {
app1_text.forEach(function(i) {
			i.classList.add("orange");
		})
   }
   window.addEventListener("click", go);