diff --git a/core/modules/shortcut/css/shortcut.theme.css b/core/modules/shortcut/css/shortcut.theme.css
index 172f483..c7bd081 100644
--- a/core/modules/shortcut/css/shortcut.theme.css
+++ b/core/modules/shortcut/css/shortcut.theme.css
@@ -36,15 +36,17 @@
   display: inline-block;
   margin-left: 0.3em;
   opacity: 0;
-  -o-transform: translateY(-12px);
   -ms-transform: translateY(-12px);
   -moz-transform: translateY(-12px);
   -webkit-transform: translateY(-12px);
   transform: translateY(-12px);
   -webkit-transition: all 200ms ease-out;
   -moz-transition: all 200ms ease-out;
-  -o-transition: all 200ms ease-out;
   transition: all 200ms ease-out;
+  -ms-backface-visibility: hidden;
+  -moz-backface-visibility: hidden;
+  -webkit-backface-visibility: hidden;
+  backface-visibility: hidden;
 }
 .add-or-remove-shortcuts a:hover .text,
 .add-or-remove-shortcuts a:focus .text {
diff --git a/core/modules/system/css/system.module.css b/core/modules/system/css/system.module.css
index f0338e9..3201d7c 100644
--- a/core/modules/system/css/system.module.css
+++ b/core/modules/system/css/system.module.css
@@ -363,6 +363,7 @@ tr .ajax-progress-throbber .throbber {
   display: block;
   margin-left: auto;
   margin-right: auto;
+}
 
 /*
  * Remove browser styles, especially for <buttons> and so on.
diff --git a/core/themes/seven/style.css b/core/themes/seven/style.css
index 43f792c..d02b4b2 100644
--- a/core/themes/seven/style.css
+++ b/core/themes/seven/style.css
@@ -242,7 +242,7 @@ li.tabs__tab a {
   [dir="rtl"] .no-svg .tabs.primary a {
     background-image: url(../../misc/icons/0074bd/chevron-left.png);
   }
-  .tabs.primary a.active {
+  .tabs.primary .tabs__tab.active a {
     background-image: none;
   }
 }