Buttons are round and shadowed to make them clearer

app/assets/stylesheets/my_styles.scss

@@ -599,6 +599,11 @@ a.black
   );
 }
 
+// Highlight a certain screenshot if ?highlight=… is given
 .pkgcard.highlight {
   border: 5px solid red;
+}
+
+.button {
+  box-shadow: 0.1rem 0.1rem 0.2rem 0 rgba(0, 0, 0, 0.5);
 }