fix: Sass issue with declaration order.

_search.scss:10:2: Sass's behavior for declarations that appear after
nested rules will be changing to match the behavior specified by CSS in
an upcoming version. To keep the existing behavior, move the declaration
above the nested rule. To opt into the new behavior, wrap the
declaration in `& {}`.

assets/scss/_search.scss

@@ -5,8 +5,8 @@
 }
 
 .search__button {
-  @include mixins.menu-button;
   float: right;
+  @include mixins.menu-button;
 }
 
 .search__button svg {