diff --git a/koha-tmpl/opac-tmpl/bootstrap/en/modules/sci/sci-main.tt b/koha-tmpl/opac-tmpl/bootstrap/en/modules/sci/sci-main.tt
index f1946f43a1..5f4abe3b24 100644
--- a/koha-tmpl/opac-tmpl/bootstrap/en/modules/sci/sci-main.tt
+++ b/koha-tmpl/opac-tmpl/bootstrap/en/modules/sci/sci-main.tt
@@ -37,7 +37,7 @@
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <meta name="generator" content="Koha" />
 <!-- leave this for stats -->
-
+<meta name="viewport" content="width=device-width, initial-scale=1" />
 [% IF ( Koha.Preference('OpacFavicon') ) %]
     <link rel="shortcut icon" href="[% Koha.Preference('OpacFavicon') | url %]" type="image/x-icon" />
 [% ELSE %]
@@ -145,14 +145,18 @@
                             <form id="scan_form" name="scan_form" method="post" action="/cgi-bin/koha/sci/sci-main.pl">
                                 [% INCLUDE 'csrf-token.inc' %]
                                 <legend class="sr-only">Scan</legend>
-                                <div class="row">
-                                    <div class="col-auto">
+                                <div class="row mb-1">
+                                    <div class="col">
                                         <label for="barcode_input">Scan the item or enter its barcode:</label>
                                     </div>
-                                    <div class="col-4">
+                                </div>
+                                <div class="row mb-1">
+                                    <div class="col-12 col-lg-4">
                                         <input id="barcode_input" name="barcode_input" size="20" type="text" class="focus form-control" autocomplete="off" />
                                     </div>
-                                    <div class="col-auto">
+                                </div>
+                                <div class="row mb-1">
+                                    <div class="col">
                                         <button id="sci_append_button" type="submit" class="btn btn-primary"> Submit </button>
                                     </div>
                                 </div>