Add sharebox

source/_patterns/01-molecules/sharebox/sharebox.mustache

+<div class="sharebox card elevation-10 {{ classes }}">
+  <div class="card__body p-8">
+    <span class="head-alt-md">Sdílení je aktem lásky</span>
+
+    <div class="flex w-full space-x-4 pt-8 text-center text-white">
+      <a href="#" class="bg-brands-facebook px-8 py-4 text-xl w-full"><i class="fab fa-facebook-f"></i></a>
+      <a href="#" class="bg-brands-twitter px-8 py-4 text-xl w-full"><i class="fab fa-twitter"></i></a>
+    </div>
+  </div>
+  <div class="h-52 overflow-hidden">
+    <img src="/images/flag.png" alt="Pirátská strana" class="w-80 object-cover m-auto" />
+  </div>
+</div>