diff --git a/chrome/global/browser.css b/chrome/global/browser.css
index f294952..cca7594 100644
--- a/chrome/global/browser.css
+++ b/chrome/global/browser.css
@@ -26,6 +26,7 @@
     --uc-tweak-rounded-corners-padding: 3px;
     --uc-tweak-rounded-corners-border: 1px;
     --uc-tweak-rounded-corners-radius: 8px;
+    --uc-tweak-rounded-corners-shadow: 0px 1px 2px rgb(0 0 0 / .1);
 
     & #browser:not([style*="--sidebar-border-color"]) {
       --sidebar-border-color: light-dark(#bfbfbf80, #595959) !important;
@@ -33,10 +34,12 @@
   }
 
   /* disable rounded corners in fullscreen, only if the toolbar is hidden */
-  :root[inFullscreen] #navigator-toolbox:where([style*="margin-top"], [fullscreenShouldAnimate]) + #browser {
+  :root[inFullscreen] #navigator-toolbox:where([style*="margin-top"], [fullscreenShouldAnimate]) + #browser,
+  :root[inDOMFullscreen] #browser {
     --uc-tweak-rounded-corners-padding: 0;
     --uc-tweak-rounded-corners-border: 0;
     --uc-tweak-rounded-corners-radius: 0;
+    --uc-tweak-rounded-corners-shadow: none;
   }
 
   #appcontent {
@@ -44,8 +47,8 @@
     margin-block-end: var(--uc-tweak-rounded-corners-padding);
     border-radius: var(--uc-tweak-rounded-corners-radius);
     overflow: hidden;
-    border: 1px solid rgb(0 0 0 / .1);
-    box-shadow: 0px 1px 2px rgb(0 0 0 / .1);
+    border: var(--uc-tweak-rounded-corners-border) solid rgb(0 0 0 / .1);
+    box-shadow: var(--uc-tweak-rounded-corners-shadow);
   }
 
 
@@ -55,7 +58,7 @@
     margin-block-end: var(--uc-tweak-rounded-corners-padding) !important;
     border-radius: var(--uc-tweak-rounded-corners-radius) !important;
     overflow: hidden !important;
-    border: 1px solid rgb(0 0 0 / .1);
+    border: var(--uc-tweak-rounded-corners-border) solid rgb(0 0 0 / .1);
     
     &[positionend] {
       margin-inline-start: 0 !important;