JSFiddle - React, Tailwind, and code Playground

HTML

<button class="btn btn-block">View <b>0</b> New Tweets</button>

CSS

.btn {
    background:#EBE9E9;
    border:1px solid #DDDCDC;
    padding:10px;
    cursor:pointer
}
.btn:hover {
    background:#E0DFDF
}
.btn-block {
    display:block;
    width:100%;

}

JavaScript

var tweets = 4;
$('b').html(tweets);