feat: Changes to ui form and drag

- Use common styles
- Move NewDiv class to external script
- Align script for form and drag pages

source/style/modules/ui/_form_module.scss

@@ -1,14 +1,18 @@
-#form body {
+.body_form {
 	margin: 0;
-	background-color: #808080;
+	background-color: $color-dark;
 }
 
 #head {
 	// display: flex;
-}
 
-h1 {
-	margin: 0;
+	button {
+			@extend .io_button;
+	}
+
+	h1 {
+		margin: 0;
+	}
 }
 
 #grid {
@@ -16,6 +20,7 @@ h1 {
 	gap: 8px;
 	grid-template-columns: repeat(4, 1fr);
 	grid-auto-rows: minmax(64px, auto);
+	margin-inline: $space_small;
 }
 
 #grid>div {