diff --git a/core/themes/seven/css/components/system.admin.css b/core/themes/seven/css/components/system.admin.css
index 8233c05..1c8ee53 100644
--- a/core/themes/seven/css/components/system.admin.css
+++ b/core/themes/seven/css/components/system.admin.css
@@ -118,7 +118,7 @@ small .admin-link:after {
 }
 .system-modules td details a {
   color: #5c5c5b;
-  border: 0px;
+  border: 0;
 }
 .system-modules td details {
   border: 0;
@@ -245,71 +245,36 @@ small .admin-link:after {
   height: auto;
 }
 
-/**
- * Theme display without vertical toolbar.
- */
 @media screen and (min-width: 45em) {
-  body:not(.toolbar-vertical) .system-themes-list-installed .screenshot,
-  body:not(.toolbar-vertical) .system-themes-list-installed .no-screenshot {
+  .system-themes-list-installed .screenshot,
+  .system-themes-list-installed .no-screenshot {
     float: left; /* LTR */
     margin: 0 20px 0 0; /* LTR */
     width: 294px;
   }
-  [dir="rtl"] body:not(.toolbar-vertical) .system-themes-list-installed .screenshot,
-  [dir="rtl"] body:not(.toolbar-vertical) .system-themes-list-installed .no-screenshot {
+  [dir="rtl"] .system-themes-list-installed .screenshot,
+  [dir="rtl"] .system-themes-list-installed .no-screenshot {
     float: right;
     margin: 0 0 0 20px;
   }
-  body:not(.toolbar-vertical) .system-themes-list-installed .system-themes-list__header {
+  .system-themes-list-installed .system-themes-list__header {
     margin-top: 0;
   }
-  body:not(.toolbar-vertical) .system-themes-list-uninstalled .theme-selector {
+  .system-themes-list-uninstalled .theme-selector {
     box-sizing: border-box;
     width: 31.25%;
     float: left; /* LTR */
     padding: 20px 20px 20px 0; /* LTR */
   }
-  [dir="rtl"] body:not(.toolbar-vertical) .system-themes-list-uninstalled .theme-selector {
+  [dir="rtl"] .system-themes-list-uninstalled .theme-selector {
     float: right;
     padding: 20px 0 20px 20px;
   }
-  body:not(.toolbar-vertical) .system-themes-list-uninstalled .theme-info {
+  .system-themes-list-uninstalled .theme-info {
     min-height: 170px;
   }
 }
 
-/**
- * Theme display with vertical toolbar.
- */
-@media screen and (min-width: 60em) {
-  .toolbar-vertical .system-themes-list-installed .screenshot,
-  .toolbar-vertical .system-themes-list-installed .no-screenshot {
-    float: left; /* LTR */
-    margin: 0 20px 0 0; /* LTR */
-    width: 294px;
-  }
-  [dir="rtl"] .toolbar-vertical .system-themes-list-installed .screenshot,
-  [dir="rtl"] .toolbar-vertical .system-themes-list-installed .no-screenshot {
-    float: right;
-    margin: 0 0 0 20px;
-  }
-  .toolbar-vertical .system-themes-list-installed .theme-info__header {
-    margin-top: 0;
-  }
-  .toolbar-vertical .system-themes-list-uninstalled .theme-selector {
-    box-sizing: border-box;
-    width: 31.25%;
-    float: left; /* LTR */
-    padding: 20px 20px 20px 0; /* LTR */
-  }
-  [dir="rtl"] .toolbar-vertical .system-themes-list-uninstalled .theme-selector {
-    float: right;
-    padding: 20px 0 20px 20px;
-  }
-  .toolbar-vertical .system-themes-list-uninstalled .theme-info {
-    min-height: 170px;
-  }
-}
 .system-themes-list-installed .theme-info {
   max-width: 940px;
 }
diff --git a/core/themes/seven/css/theme/maintenance-page.css b/core/themes/seven/css/theme/maintenance-page.css
index f2a8306..bb29a22 100644
--- a/core/themes/seven/css/theme/maintenance-page.css
+++ b/core/themes/seven/css/theme/maintenance-page.css
@@ -52,7 +52,6 @@
   .task-list {
     margin-left: 0; /* LTR */
     list-style-type: none;
-    list-style-image: none;
     padding-left: 0; /* LTR */
     padding-bottom: 1em;
   }