| <!DOCTYPE html> | 
 | <title>Test dynamic updates with text slotted into flexbox</title> | 
 | <link rel="help" href="https://drafts.csswg.org/css-scoping/"> | 
 | <div id="test"> | 
 |     <template shadowrootmode=open> | 
 |         <style> | 
 |             .content { | 
 |                 border: 2px solid blue; | 
 |                 display: flex; | 
 |             } | 
 |         </style> | 
 |         <div class="content"> | 
 |             <slot></slot> | 
 |             <div id="toggle">This too.</div> | 
 |         </div> | 
 |     </template> | 
 |     This should be visible. | 
 | </div> | 
 |  | 
 | <script> | 
 | document.body.offsetLeft; | 
 | const toggle = test.shadowRoot.querySelector("#toggle"); | 
 | toggle.style.display = "none"; | 
 | document.body.offsetLeft; | 
 | toggle.style.display = "block"; | 
 | </script> |