Ticket #54254: 54254.patch

style-editor.css

@@ -835 +835 @@
 .wp-block-columns.is-selected > .wp-block-column > *:nth-last-child(2) {
         margin-bottom: 0;
 }
+
+.wp-block-columns .wp-block-image .components-placeholder.is-medium .components-placeholder__fieldset .components-button.is-tertiary{
+        margin: 0 auto 12px;
+}
+
 @media only screen and (min-width: 652px) {
 
         .wp-block-columns.is-style-twentytwentyone-columns-overlap .wp-block-column:nth-child(2n) {