JSFiddle - React, Tailwind, and code Playground

HTML

<p>Plain, unmoified styles</p>

<iframe src="//widgets.spinitron.com/widget/now-playing-v2?station=wzbc"></iframe>

<p>Using an external stylesheet. Blue song name</p>

<iframe src="//widgets.spinitron.com/widget/now-playing-v2?station=wzbc&css=https%3A%2F%2Ffsbdoc.s3.amazonaws.com%2Ffoo.css"></iframe>

<p>Using inline style rules. Green song name</p>

<iframe src="//widgets.spinitron.com/widget/now-playing-v2?station=wzbc&css=.song%7Bcolor%3Agreen%7D"></iframe>

CSS

iframe {
  width: 100%;
  border: 1px solid #ddd;
  overflow: auto;
}