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HTML

              
                [[[https://codepen.io/acordova/pen/JzoBwQ]]]

<div class="container">
  <h1 class="slds-text-heading_large pb">
    Ways to Announce Menu Sub Headers
  </h1>
  
  <p class="pv">
    Screen readers don't announce our menu subheadings b/c there's currently no aria recommendation for how to do it.
  </p>
  
  <div class="grid">
     <div>
       <h2 class="slds-text-heading_small pb">Current SLDS Implementation</h2>
       <div class="slds-dropdown-trigger slds-dropdown-trigger_click slds-is-open">
         <button class="slds-button slds-button_icon slds-button_icon-border-filled" aria-haspopup="true">
           <svg class="slds-button__icon" aria-hidden="true">
             <use xlink:href="#down"></use>
           </svg>
           <span class="slds-assistive-text">Show More</span>
         </button>
         <div class="slds-dropdown slds-dropdown_left slds-dropdown_small">
           <ul class="slds-dropdown__list" role="menu" aria-label="Show More">
             <li class="slds-dropdown__header slds-truncate" title="Menu Sub Heading" role="separator">
               <span>Menu Sub Heading</span>
             </li>
             <li class="slds-dropdown__item" role="presentation">
               <a href="javascript:void(0);" role="menuitem" tabindex="0">
                 <span class="slds-truncate">Menu Item One</span>
               </a>
             </li>
             <li class="slds-dropdown__item" role="presentation">
               <a href="javascript:void(0);"tabindex="-1">
                 <span class="slds-truncate" title="Menu Item Two">Menu Item Two</span>
               </a>
             </li>
             <li class="slds-dropdown__header slds-truncate" role="separator">
               <span>Menu Sub Heading</span>
             </li>
             <li class="slds-dropdown__item" role="presentation">
               <a href="javascript:void(0);" role="menuitem" tabindex="-1">
                 <span class="slds-truncate">Menu Item One</span>
               </a>
             </li>
             <li class="slds-dropdown__item" role="presentation">
               <a href="javascript:void(0);" role="menuitem" tabindex="-1">
                 <span class="slds-truncate">Menu Item Two</span>
               </a>
             </li>
           </ul>
          </div>
        </div>
      </div>
    <div>
      <h2 class="slds-text-heading_small pb">With aria-label on the Separator</h2>
      <div class="slds-dropdown-trigger slds-dropdown-trigger_click slds-is-open">
      <button class="slds-button slds-button_icon slds-button_icon-border-filled" aria-haspopup="true">
        <svg class="slds-button__icon" aria-hidden="true">
          <use xlink:href="#down"></use>
        </svg>
        <span class="slds-assistive-text">Show More</span>
      </button>
      <div class="slds-dropdown slds-dropdown_left slds-dropdown_small">
        <ul class="slds-dropdown__list" role="menu" aria-label="Show More">
          <li aria-label="Menu Sub Heading" class="slds-dropdown__header slds-truncate" role="separator">
            <span>Menu Sub Heading</span>
          </li>
          <li class="slds-dropdown__item" role="presentation">
            <a href="javascript:void(0);" role="menuitem" tabindex="0">
              <span class="slds-truncate">Menu Item One</span>
            </a>
          </li>
          <li class="slds-dropdown__item" role="presentation">
            <a href="javascript:void(0);" role="menuitem" tabindex="-1">
              <span class="slds-truncate">Menu Item Two</span>
            </a>
          </li>
          <li aria-label="Menu Sub Heading" class="slds-dropdown__header slds-truncate" role="separator">
            <span>Menu Sub Heading</span>
          </li>
          <li class="slds-dropdown__item" role="presentation">
            <a href="javascript:void(0);" role="menuitem" tabindex="-1">
              <span class="slds-truncate">Menu Item One</span>
            </a>
          </li>
          <li class="slds-dropdown__item" role="presentation">
            <a href="javascript:void(0);" role="menuitem" tabindex="-1">
              <span class="slds-truncate">Menu Item Two</span>
            </a>
          </li>
        </ul>
      </div>
    </div>
  </div>  
    <div>
      <h2 class="slds-text-heading_small pb">With labelled groups [best]</h2>
      <div class="slds-dropdown-trigger slds-dropdown-trigger_click slds-is-open">
      <button class="slds-button slds-button_icon slds-button_icon-border-filled" aria-haspopup="true">
        <svg class="slds-button__icon" aria-hidden="true">
          <use xlink:href="#down"></use>
        </svg>
        <span class="slds-assistive-text">Show More</span>
      </button>
      <div class="slds-dropdown slds-dropdown_left slds-dropdown_small">
        <ul class="slds-dropdown__list" role="menu" aria-label="Show More">
          <li class="slds-dropdown__header slds-truncate" role="separator">
            <span id="foo">Menu Sub Heading</span>
          </li>
          <div role="group" aria-labelledby="foo">
            <li class="slds-dropdown__item" role="presentation">
            <a href="javascript:void(0);" role="menuitem" tabindex="0">
              <span class="slds-truncate">Menu Item One</span>
            </a>
          </li>
          <li class="slds-dropdown__item" role="presentation">
            <a href="javascript:void(0);" role="menuitem" tabindex="-1">
              <span class="slds-truncate">Menu Item Two</span>
            </a>
          </li>
          </div>
          <li class="slds-dropdown__header slds-truncate" role="separator">
            <span id="bar">Menu Sub Heading</span>
          </li>
          <div role="group" aria-labelledby="bar">
             <li class="slds-dropdown__item" role="presentation">
            <a href="javascript:void(0);" role="menuitem" tabindex="-1">
              <span class="slds-truncate">Menu Item One</span>
            </a>
          </li>
          <li class="slds-dropdown__item" role="presentation">
            <a href="javascript:void(0);" role="menuitem" tabindex="-1">
              <span class="slds-truncate">Menu Item Two</span>
            </a>
          </li>
          </div>
        </ul>
      </div>
    </div>
  </div>
</div>
              
            
!

CSS

              
                .container {
  background-color: white;
  width: 80%;
  margin: auto;
  padding: 2rem;
}

.pv {
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.pb { padding-bottom: 1rem; }

.grid {
  display: grid;
  grid-template-columns: 33% 33% 33%;
}

              
            
!

JS

              
                $(document).ready(function() {
  
});
              
            
!
999px

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