JSFiddle - React, Tailwind, and code Playground

HTML

<div class="menu">
    <a>
        <span>1</span>
    </a>
    <a>
        <span>2</span>
    </a>
</div>

CSS

span {
    border: 1px solid black;
}

div.menu a span {        
    color: #000000;    
    display: block;    
    font-size: 14px;    
    padding:20px;  
    line-height: 20px; 
    float: left;
    width: auto;
}

div.menu a span:hover {    
    color: #FFF; 
    cursor: pointer; 
    font-weight:bold;
    
}