fixes background image flashing full size when page loads

view/common/block-layout/render-3d.phtml

@@ -22,6 +22,7 @@ model-viewer {
   height: 500px;
   outline: none;
   background-color: transparent;
+	visibility: hidden;
 }
 </style>
 
@@ -68,6 +69,12 @@ model-viewer {
 <script type="module" src="/modules/Render3D/asset/vendor/google/model-viewer.js"></script>
 
 
+<script>
+$( document ).ready(function() {
+    $("model-viewer").css('visibility', 'visible')
+});
+</script>
+
 <?php
 /*
 echo $this->inlineScript()