docs(SharePopover): correct inline-block/relative comments — inline-block is load-bearing, relative is incidental

DeepDrftPublic/wwwroot/styles/deepdrft-styles.css

@@ -358,8 +358,10 @@ h2, h3, h4, h5, h6,
     font-family: var(--deepdrft-font-mono) !important;
 }
 
-/* Relative-positioned wrapper that gives MudPopover a local anchor so it opens
-   adjacent to the share button rather than relative to the page body. */
+/* display:inline-block is load-bearing: it shrink-wraps the wrapper to the
+   button so MudPopover's portal reads the button's tight bounding rect
+   (parentNode.getBoundingClientRect()) instead of a page-wide flow box.
+   position:relative is incidental — do not drop inline-block. */
 .deepdrft-share-popover-anchor {
     position: relative;
     display: inline-block;