diff --git a/app/design/frontend/Magento/luma/Magento_Theme/web/css/source/_module.less b/app/design/frontend/Magento/luma/Magento_Theme/web/css/source/_module.less
index 3a421197ac7cb..cb35f3963b596 100644
--- a/app/design/frontend/Magento/luma/Magento_Theme/web/css/source/_module.less
+++ b/app/design/frontend/Magento/luma/Magento_Theme/web/css/source/_module.less
@@ -260,6 +260,7 @@
         display: block;
         padding: @indent__s;
         text-align: center;
+        box-sizing: border-box;
     }
 
     .page-header,
@@ -409,6 +410,12 @@
             }
         }
     }
+    .page-footer,
+    .copyright {
+        bottom: 0;
+        position: absolute;
+        width: 100%;
+    }
 }
 
 .media-width(@extremum, @break) when (@extremum = 'max') and (@break = @screen__s) {