added image gallery component; moved blurred background to separate CSS class

src/lib/lists/blog-gallery.svelte

@@ -10,7 +10,7 @@
 
 <div class="entry-container">
     {#each posts as post}
-        <a class="entry" href="{post.key}">
+        <a class="entry blurred-background-hover" href="{post.key}">
             <div class="entry-banner-container">
                 <img class="entry-banner" src="{post.key}/{post.post.banner}" alt="{post.post.bannerAlt}">
             </div>
@@ -55,7 +55,6 @@
     .entry:hover {
         background-color: var(--color-background-highlight-alt);
         border-color: var(--color-highlight-alt);
-        backdrop-filter: blur(var(--blur-radius-background));
     }
 
     .entry:hover .entry-banner {