diff --git a/extensions/amp-app-banner/0.1/amp-app-banner.css b/extensions/amp-app-banner/0.1/amp-app-banner.css
index 16787b9de80e..3dd805fb3d60 100644
--- a/extensions/amp-app-banner/0.1/amp-app-banner.css
+++ b/extensions/amp-app-banner/0.1/amp-app-banner.css
@@ -27,17 +27,17 @@ amp-app-banner {
 }
 
 .amp-app-banner-dismiss-button {
-  position: absolute !important;
-  width: 32px !important;
-  height: 32px !important;
-  top: -32px !important;
-  right: 0 !important;
+  position: absolute;
+  width: 32px;
+  height: 32px;
+  top: -32px;
+  right: 0;
   background-image: url('data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20fill%3D%22%23000000%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20width%3D%2224%22%3E%3Cpath%20d%3D%22M19%206.41L17.59%205%2012%2010.59%206.41%205%205%206.41%2010.59%2012%205%2017.59%206.41%2019%2012%2013.41%2017.59%2019%2019%2017.59%2013.41%2012z%22%2F%3E%3Cpath%20d%3D%22M0%200h24v24H0z%22%20fill%3D%22none%22%2F%3E%3C%2Fsvg%3E');
   background-size: 26px 26px;
   background-position: center;
   background-color: #fff;
   border: 1px solid #c8c8c8;
-  z-index: 13 !important;
+  z-index: 13;
 }
 
 /* Increase tapping area of the dismiss button */
@@ -51,8 +51,8 @@ amp-app-banner {
 }
 
 [dir=rtl] .amp-app-banner-dismiss-button {
-  right: auto !important;
-  left: 0 !important;;
+  right: auto;
+  left: 0;
 }
 
 [dir=rtl] .amp-app-banner-dismiss-button:before {
diff --git a/extensions/amp-sticky-ad/0.1/amp-sticky-ad.css b/extensions/amp-sticky-ad/0.1/amp-sticky-ad.css
index 75ea26a8daea..0f40a0483ec7 100644
--- a/extensions/amp-sticky-ad/0.1/amp-sticky-ad.css
+++ b/extensions/amp-sticky-ad/0.1/amp-sticky-ad.css
@@ -52,11 +52,11 @@ amp-sticky-ad {
 
 .amp-sticky-ad-close-button {
   visibility: hidden;
-  position: absolute !important;
-  width: 32px !important;
-  height: 32px !important;
-  top: -32px !important;
-  right: 0 !important;
+  position: absolute;
+  width: 32px;
+  height: 32px;
+  top: -32px;
+  right: 0;
   background-image: url('data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20fill%3D%22%23000000%22%20height%3D%2224%22%20viewBox%3D%220%200%2024%2024%22%20width%3D%2224%22%3E%3Cpath%20d%3D%22M19%206.41L17.59%205%2012%2010.59%206.41%205%205%206.41%2010.59%2012%205%2017.59%206.41%2019%2012%2013.41%2017.59%2019%2019%2017.59%2013.41%2012z%22%2F%3E%3Cpath%20d%3D%22M0%200h24v24H0z%22%20fill%3D%22none%22%2F%3E%3C%2Fsvg%3E');
   background-size: 26px 26px;
   background-position: center;
@@ -79,8 +79,8 @@ amp-sticky-ad {
 }
 
 [dir=rtl] .amp-sticky-ad-close-button {
-  right: auto !important;
-  left: 0 !important;;
+  right: auto;
+  left: 0;
 }
 
 [dir=rtl] .amp-sticky-ad-close-button:before {