JSFiddle - React, Tailwind, and code Playground

HTML

<div class="right-block">
        <div class="menu">
          <ul>
            <li>1</li>
            <li>2</li>
            <li>3</li>
            <li>4</li>
            <li>5</li>
            <li>6</li>
            <li>7</li>
            <li>8</li>
          </ul>
        
        </div>
    </div>

CSS

.menu li{
font-size:30px;
}