Disallow nested use of gallery shortcode params align, justify

README.md

@@ -575,11 +575,9 @@ The `paige/gallery` shortcode provides a figure with a collection of images.
 
 {{< paige/gallery >}}
     {{< paige/gallery
-        align="center"
         caption="My caption"
         height="10rem"
         image="me.jpg"
-        justify="center"
         maxheight="10rem"
         maxwidth="10rem"
         method="resize"
@@ -588,11 +586,9 @@ The `paige/gallery` shortcode provides a figure with a collection of images.
         width="10rem"
     />}}
     {{< paige/gallery
-        align="center"
         caption="My caption"
         height="10rem"
         image="you.jpg"
-        justify="center"
         maxheight="10rem"
         maxwidth="10rem"
         method="resize"
@@ -609,7 +605,7 @@ Parameters:
 
 <dl>
     <dt><code>align</code></dt>
-    <dd>Optional. String. Cross axis alignment. Must be <code>start</code>, <code>center</code>, <code>end</code>, etc. See <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/align-items"><code>align-items</code></a>.</dd>
+    <dd>Optional. String. Cross axis alignment. Must be <code>start</code>, <code>center</code>, <code>end</code>, etc. Must not be used when nested. See <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/align-items"><code>align-items</code></a>.</dd>
     <dt><code>caption</code></dt>
     <dd>Optional. String. Markdown. Descriptive text below the image or images.</dd>
     <dt><code>height</code></dt>
@@ -619,7 +615,7 @@ Parameters:
     <dt><code>images</code></dt>
     <dd>Optional. Position 0. String. Page, site, or remote images glob. Default is all image page resources.</dd>
     <dt><code>justify</code></dt>
-    <dd>Optional. String. Main axis space distribution. Must be <code>start</code>, <code>center</code>, <code>end</code>, etc. See <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/justify-content"><code>justify-content</code></a>.</dd>
+    <dd>Optional. String. Main axis space distribution. Must be <code>start</code>, <code>center</code>, <code>end</code>, etc. Must not be used when nested. See <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/justify-content"><code>justify-content</code></a>.</dd>
     <dt><code>maxheight</code></dt>
     <dd>Optional. String. CSS value. Maximum image height.</dd>
     <dt><code>maxwidth</code></dt>