diff --git a/web/src/components/PageLayout.js b/web/src/components/PageLayout.js
index e7e1d647..59a9ca44 100644
--- a/web/src/components/PageLayout.js
+++ b/web/src/components/PageLayout.js
@@ -110,7 +110,6 @@ const PageLayout = () => {
               top: '56px',
               zIndex: 99,
               background: 'var(--semi-color-bg-1)',
-              boxShadow: '0 2px 8px rgba(0, 0, 0, 0.15)',
               border: 'none',
               paddingRight: '0',
               height: 'calc(100vh - 56px)',
diff --git a/web/src/components/SiderBar.js b/web/src/components/SiderBar.js
index 25b350d1..65a2412f 100644
--- a/web/src/components/SiderBar.js
+++ b/web/src/components/SiderBar.js
@@ -356,7 +356,6 @@ const SiderBar = () => {
         className='custom-sidebar-nav'
         style={{
           width: isCollapsed ? '60px' : '200px',
-          boxShadow: '0 2px 8px rgba(0, 0, 0, 0.15)',
           borderRight: '1px solid var(--semi-color-border)',
           background: 'var(--semi-color-bg-1)',
           borderRadius: styleState.isMobile ? '0' : '0 8px 8px 0',