UI refinements (#2859)

## Description:

UI Refinements requested by @evanpelle  check https://ui.openfront.dev

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

w.o.n

src/client/components/PatternButton.ts

@@ -188,7 +188,7 @@ function renderBlankPreview(width: number, height: number): TemplateResult {
       </div>
     </div>
     <div
-      class="hidden md:flex items-center justify-center h-full w-full bg-white/5 rounded overflow-hidden relative border border-white/10 box-border text-center p-1"
+      class="hidden md:flex items-center justify-center h-full w-full rounded overflow-hidden relative text-center p-1"
     >
       <span
         class="text-[10px] font-black text-white/40 uppercase leading-none break-words w-full"