JS Bin// source http://jsbin.com/tucokovega

blobStylesheet.js

'use strict';

var container = document.getElementById('container');

//create resource locally for testing
var stylesheet = '#container{background: red; width: 100px; height: 100px; display: block;}';

var sBlob = new Blob([stylesheet], { type: 'text/css' });

//get blob as a blob: url
var sBlobURL = (URL || webkitURL).createObjectURL(sBlob);

var link = document.createElement('link');
link.href = sBlobURL;
link.rel = 'stylesheet';

document.head.appendChild(link);