Add reactive styles for Tablets

src/client/site/browse_page/browse_page.scss

@@ -10,13 +10,23 @@
 
     .right {
         .tile_container {
-            display         : flex;
-            flex-wrap       : wrap;
-            justify-content : space-between;
+            display     : flex;
+            flex-wrap   : wrap;
+
+            @include screen-size(tablet) {
+                flex-direction: column;
+                align-items: stretch;
+            }
 
             .view__mod_tile {
-                width         : calc(50% - 12px); // $size-margin-large / 2
+                flex          : 1 1 calc(50% - 12px); // $size-margin-large / 2
+                margin-right  : $size-margin-medium;
                 margin-bottom : $size-margin-large;
+
+                @include screen-size(tablet) {
+                    flex: 0 0 auto;
+                    margin-right: 0;
+                }
             }
         }
     }

src/client/site/browse_page/mod_tile/mod_tile.scss

@@ -13,7 +13,7 @@
     align-items     : stretch;
 
     a {
-        max-width: 100%;
+        width: 100%;
 
         @include floating-panel;
         border          : $size-border-medium solid $color-background-panel;