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

src/routes/+page.svelte

@@ -112,7 +112,7 @@
         </div>
 
         <div>
-            <div class="sidebox-container">
+            <div class="sidebox-container blurred-background">
                 <h4 class="sidebox-header">heads-up</h4>
                 <p>This website works best on Firefox and other Gecko-based browsers! All pages <i>should</i> be responsive and work on mobile.</p>
                 <p>This website is 100% mobile-friendly – or at least trying to be!</p>
@@ -216,7 +216,6 @@
 
     .sidebox-container {
         padding: 8px 16px;
-        backdrop-filter: blur(var(--blur-radius-background));
         border-width: var(--border-dash-size);
         border-style: var(--border-style);
         border-color: var(--color-highlight-alt);