style: improve contrast on topic tags

OliverBooth/Pages/Blog/Article.cshtml

@@ -80,7 +80,7 @@
         <a href="#disqus_thread" data-disqus-identifier="@post.GetDisqusIdentifier()">0 Comments</a>
     }
 </p>
-<div>
+<div class="post-tags">
     @foreach (string tag in post.Tags)
     {
         <a asp-page="Index" asp-route-tag="@tag" class="badge bg-secondary">@tag</a>

src/scss/app.scss

@@ -371,5 +371,18 @@ td.trim-p p:last-child {
     font-size: 3em;
     margin: 0;
     padding: 0;
+}
+
+.post-tags a.badge {
+  transition: color 250ms, background-color 250ms;
+  
+  &:link, &:visited, &:active {
+    background-color: #2D2D2D !important;
+    color: #fff;
+  }
+
+  &:hover {
+    color: #03A9F4;
+    background-color: #1E1E1E !important;
   }
 }