diff --git a/src/components/page/page_body/_page_body.scss b/src/components/page/page_body/_page_body.scss
index 3307437e94e7..0ce849817b85 100644
--- a/src/components/page/page_body/_page_body.scss
+++ b/src/components/page/page_body/_page_body.scss
@@ -2,7 +2,7 @@
   display: flex;
   flex-direction: column;
   align-items: stretch;
-  flex: 1 1 0%;
+  flex: 1 1 100%;
 
   &--restrictWidth-default,
   &--restrictWidth-custom {