Place control buttons next to search input on large enough screens

public/index.html

@@ -163,6 +163,12 @@
      }
 
      @media screen and (min-width: 640px) {
+         section.posts .controls {
+             grid-template:
+                 "a a"
+                 "b c";
+         }
+
          section.posts .controls .post-info {
              grid-area: a;
          }