JSFiddle - React, Tailwind, and code Playground

HTML

<aside></aside>

CSS

body aside {
    background-color: lemonchiffon !important; 
    /* Because 'body aside' is more specific than 'aside' - (0,0,0,2) vs (0,0,0,1) */
    height: 5em;    
    width: 5em;
}

aside {
    background-color: orange !important; 
    /* Only one type selector (aside) (0,0,0,1) */
}