<script>
  fetch('https://spark-assets.netlify.com/spark-core-icons.svg', {strictSSL: false})
  .then(function(response) {
    return response.text();
  })
  .then(function(svg) {
    document.querySelector('#sprk-icons').innerHTML = svg;
  })
  .catch(function(error) {
    console.log(error);
  });
</script>
<script>
  var request = new XMLHttpRequest();
  request.open("GET", "https://spark-assets.netlify.com/spark-core-icons.svg");
  request.send();
  request.onload = function() {
    document.querySelector('#sprk-icons').innerHTML = this.response;
  };
</script>
Update fetch to account for IE11
Update fetch to account for IE11
