only allow inserting into red-orbital block

src/block.json

@@ -14,6 +14,7 @@
 	"editorScript": "file:./index.js",
 	"editorStyle": "file:./index.css",
 	"style": "file:./style-index.css",
+	"parent": ["red-block/red-orbital"],
 	"attributes": {
 		"imgSrc": {
 			"type": "string",

src/editor.scss

@@ -8,20 +8,20 @@
 	display: flex;
 	align-items: center;
 	list-style: none;
-	margin-bottom: 16px;
-	padding: 16px;
+	margin-bottom: 1px;
+	padding: 8px;
 
 	.block-editor-inner-blocks > .block-editor-block-list__layout {
 		display: flex;
 		align-items: center;
 
 		> * {
-			max-height: 120px;
-			margin: 16px;
+			max-height: 60px;
+			margin: 6px;
 		}
 
 		img {
-			max-height: 120px;
+			max-height: 60px;
 			width: auto;
 			max-width: 240px;
 		}