diff --git a/koha-tmpl/opac-tmpl/bootstrap/less/responsive.less b/koha-tmpl/opac-tmpl/bootstrap/less/responsive.less
index 2ef2168455..2df6bf56a7 100644
--- a/koha-tmpl/opac-tmpl/bootstrap/less/responsive.less
+++ b/koha-tmpl/opac-tmpl/bootstrap/less/responsive.less
@@ -124,7 +124,9 @@
         select,
         .librarypulldown .transl1,
         .input-append {
+            box-sizing: border-box;
             display: block;
+            height: 120%;
             width : 97%;
             max-width: 100%;
             margin : .5em 0;
@@ -478,4 +480,4 @@
     #ulactioncontainer {
         min-width : 0;
     }
-}
\ No newline at end of file
+}