JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <span <ion-icon name="ios-arrow-down"></ion-icon></span> -> Icon flipped
</div>

CSS

.ion-icon {
        -moz-transform: scaleX(-1);
        -o-transform: scaleX(-1);
        -webkit-transform: scaleX(-1);
        transform: scaleX(-1);
        filter: FlipH;
        -ms-filter: "FlipH";
}