diff --git a/src/scss/environment.scss b/src/scss/environment.scss
index c95c6bf2..83c3440c 100644
--- a/src/scss/environment.scss
+++ b/src/scss/environment.scss
@@ -1,14 +1,4 @@
-html.os_windows {
-  body {
-    border-top: 1px solid #dddddd;
-  }
-
-  &.theme_dark body {
-    border-top-color: #000000;
-  }
-}
-
-html.os_macos {
+html.os_macos {
   body.layout_frontend {
     -webkit-app-region: drag;