feat: remove tailwindcss + introduce windicss

components/app/Support.vue

@@ -2,9 +2,9 @@
   <SmartModal v-if="show" @close="hideModal">
     <div slot="header">
       <div class="row-wrapper">
-        <h3 class="title">{{ $t("support_us") }}</h3>
+        <h3 class="heading">{{ $t("support_us") }}</h3>
         <div>
-          <button class="icon" @click="hideModal">
+          <button class="icon button" @click="hideModal">
             <i class="material-icons">close</i>
           </button>
         </div>