diff --git a/src/styles.scss b/src/styles.scss
index 6894f48..40ce44e 100644
--- a/src/styles.scss
+++ b/src/styles.scss
@@ -28,14 +28,17 @@ $tab-bg-inactive-hover: #3e4146;
   transition: background-color 0s;
   background-color: $tab-bg;
   border-left-style: solid;
-  border-top-style: solid;
-  border-top-width: 1px;
 }
 
 .tab_tab.tab_active + .tab_tab {
   border-left-style: solid;
 }
 
+.header_windowHeader + .tabs_nav .tab_tab.tab_active {
+  border-top-style: solid;
+  border-top-width: 1px;
+}
+
 .header_windowHeader + .tabs_nav .tab_tab.tab_firstActive {
   border-left-style: none;
 }