JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="fileMenu" class="contextMenu">
    <li class="add"><a id ="addbtn" href="#add">Add</a></li>
    <li class="download disable"><a href="#download">Download</a></li>
    <li class="rename"><a href="#rename">Rename</a></li>
    <li class="del"><a href="#delete">Delete</a></li>
    <li class="copypath"><a href="#copypath">Copypath</a></li>
</ul>

CSS

.disable {
    position: relative;
}
.disable:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
}
.disable a {
    color: gray;
    cursor: default;
}