Changing flex-direction from row-reverse to column fixes this in IE11

altofocus/style.css

@@ -3557,7 +3557,7 @@ object {
 @media screen and (min-width: 50em) {
   .site-header-wrap {
     display: flex;
-    flex-direction: row-reverse;
+    flex-direction: column;
     justify-content: space-between;
     padding: 3.5em 0;
     position: relative;