appview/pages: apply monospace font for all textarea

monospace font for textarea in dev app is so common that we can just
apply it as an opt-out style for all textareas

Signed-off-by: Seongmin Lee <[e-mail]>

appview/pages/templates/strings/fragments/form.html

···
       name="content" 
       id="content-textarea"
       wrap="off"
-      class="w-full dark:bg-gray-700 dark:text-white dark:border-gray-600 dark:placeholder-gray-400 font-mono"
+      class="w-full dark:bg-gray-700 dark:text-white dark:border-gray-600 dark:placeholder-gray-400"
       rows="20"
       spellcheck="false"
       placeholder="Paste your string here!"

input.css

···
             @apply border border-gray-400 block rounded bg-gray-50 focus:ring-black p-3 dark:bg-gray-800 dark:border-gray-600 dark:text-white dark:focus:ring-gray-400;
         }
         textarea {
-            @apply border border-gray-400 block rounded bg-gray-50 focus:ring-black p-3 dark:bg-gray-800 dark:border-gray-600 dark:text-white dark:focus:ring-gray-400;
+            @apply border border-gray-400 block rounded bg-gray-50 focus:ring-black p-3 dark:bg-gray-800 dark:border-gray-600 dark:text-white dark:focus:ring-gray-400 font-mono;
         }
         details summary::-webkit-details-marker {
             display: none;