Ajustements de la recherche (#847)

assets/sass/_theme/design-system/footer.sass

@@ -27,8 +27,6 @@ footer#document-footer
             + .container,
             > * + *
                 margin-top: $spacing-5
-            + .footer-search
-                margin-top: 0
 
     @include media-breakpoint-up(desktop)
         .container

assets/sass/_theme/design-system/search.sass

@@ -64,7 +64,7 @@
                 position: fixed
                 pointer-events: none
                 z-index: 9
-                font-size: $h2-size
+                font-size: 1.1em
                 @include media-breakpoint-down(desktop)
                     right: $spacing-3
                     top: space(35)