diff --git a/src/background/index.ts b/src/background/index.ts
index 95a0f687..99d60e9c 100644
--- a/src/background/index.ts
+++ b/src/background/index.ts
@@ -81,6 +81,7 @@ browser.tabs.onUpdated.addListener((tabId: number, changInfo: Tabs.OnUpdatedChan
           css: `
             ::-webkit-scrollbar {
               width: 8px;
+              height: 8px;
             }
 
             ::-webkit-scrollbar-track {
@@ -95,6 +96,10 @@ browser.tabs.onUpdated.addListener((tabId: number, changInfo: Tabs.OnUpdatedChan
               background-color: var(--bew-fill-3);
               border-radius: 20px;
             }
+
+            ::-webkit-scrollbar-corner {
+              background: var(--bew-bg)
+            }
           `,
           // runAt: 'document_start',
           target: { tabId },