JSFiddle - React, Tailwind, and code Playground

HTML

<img id="logo" src="http://upload.wikimedia.org/wikipedia/commons/thumb/8/84/Example.svg/200px-Example.svg.png" />

CSS

#logo {
    opacity: 1;
    filter:alpha(opacity=100);
    transition: opacity 0.2s linear 0s;
    -webkit-transition: opacity 0.2s linear 0s;
}

#logo:hover {
    opacity: 0.3;
    filter:alpha(opacity=30);
    transition: opacity 0.2s linear 0s;
    -webkit-transition: opacity 0.2s linear 0s;
}