diff --git a/projects/demo/src/styles/styles.less b/projects/demo/src/styles/styles.less
index 37cb0f028c36..5c783096c6f1 100644
--- a/projects/demo/src/styles/styles.less
+++ b/projects/demo/src/styles/styles.less
@@ -8,6 +8,8 @@ html,
 body {
     scroll-behavior: smooth;
     font: var(--tui-font-text-m);
+    padding: 0;
+    margin: 0;
 
     &:has(tui-root[tuiTheme='dark']) {
         background: #222;