JSFiddle - React, Tailwind, and code Playground

HTML

<button>Welcome</button>

CSS

button{
    -webkit-transform: scale( 3 );
    margin:100px;
}

JavaScript

setTimeout( function() {
    alert( $('button').height().toFixed(2) + 'px' );
    alert( $('button').css('height')   );
}, 3000);