diff --git a/addons/sale/static/src/scss/sale_portal.scss b/addons/sale/static/src/scss/sale_portal.scss
index 3316f254eb3..56b7883a7dd 100644
--- a/addons/sale/static/src/scss/sale_portal.scss
+++ b/addons/sale/static/src/scss/sale_portal.scss
@@ -17,13 +17,19 @@
     overflow-wrap: break-word;
 }
 
+.sale_tbody input.js_quantity {
+    min-width: 48px;
+    text-align: center;
+}
+
+.sale_tbody div.input-group.w-50.pull-right {
+    width: 100% !important;
+}
+
 .o_portal .sale_tbody .js_quantity_container {
-    width: 50%;
 
     .js_quantity {
-        text-align: center;
         padding: 0;
-        min-width: 48px;
     }
 
     .input-group-text {