webui: pedantic style tweak for CodePreviewDialog close button

Author: ServeurpersoCom

tools/server/webui/src/lib/components/app/misc/CodePreviewDialog.svelte

@@ -42,7 +42,7 @@
 			></iframe>
 
 			<DialogPrimitive.Close
-				class="code-preview-close absolute top-4 right-6 rounded-xs text-white opacity-70 mix-blend-difference ring-offset-background transition-opacity hover:opacity-100 focus:ring-2 focus:ring-ring focus:ring-offset-2 focus:outline-hidden disabled:pointer-events-none [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-8"
+				class="code-preview-close absolute top-4 right-4 border-none bg-transparent text-white opacity-70 mix-blend-difference transition-opacity hover:opacity-100 focus-visible:ring-0 focus-visible:ring-offset-0 focus-visible:outline-none disabled:pointer-events-none [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-8"
 				aria-label="Close preview"
 			>
 				<XIcon />