fix: Alignment newsletter button

Author: ktquez

src/.vuepress/theme/components/NewsletterForm.vue

@@ -20,7 +20,7 @@
         type="email"
         required
         autocomplete="email"
-        class="w-full p-4 border border-solid rounded-md outline-none bg-main newsletter-form-input c-border-color hover:border-accent-primary focus:border-accent-primary"
+        class="w-full p-3 text-xl border border-solid rounded-md outline-none bg-main newsletter-form-input c-border-color hover:border-accent-primary focus:border-accent-primary"
       >
     </label>
     <slot name="button">

src/.vuepress/theme/components/RightNavigation.vue

@@ -18,9 +18,9 @@
         <button
           slot="button"
           type="submit"
-          class="flex items-center justify-center w-12 px-2 ml-2"
+          class="flex items-center self-end justify-center w-12 px-2 py-4 ml-2"
+          :aria-label="$themeLocaleConfig.newsletter.textButton"
         >
-          <span class="sr-only">{{ $themeLocaleConfig.newsletter.textButton }}</span>
           <vp-icon
             name="send"
             size="30"