Handle mobile breakpoints correctly

css/glowingbear.css

@@ -7,6 +7,10 @@ body {
     overflow: hidden;
 }
 
+.mobile {
+  display: none;
+}
+
 a {
     cursor: pointer;
 }
@@ -599,6 +603,14 @@ img.emojione {
 /* */
 @media (max-width: 968px) {
 
+    .mobile {
+      display: inherit;
+    }
+
+    .desktop {
+      display: none;
+    }
+
     #bufferlines table {
         border-collapse: separate;
         border-spacing: 2px 3px;