Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

core/themes/seven/css/base/elements.css

@@ -150,11 +150,6 @@ quote,
 code {
   margin: .5em 0;
 }
-code,
-pre,
-kbd {
-  font-size: 1.231em;
-}
 pre {
   margin: 0.5em 0;
   white-space: pre-wrap;

core/themes/seven/css/components/dialog.css

@@ -11,7 +11,8 @@
 }
 @media all and (max-width: 48em) { /* 768px */
   .ui-dialog {
-    width: 92% !important;
+    min-width: 92%;
+    max-width: 92%;
   }
 }
 .ui-dialog .ui-dialog-titlebar {

core/themes/seven/css/components/menus-and-lists.css

@@ -38,7 +38,3 @@ ul.inline li {
 ul.inline li {
   display: inline;
 }
-.item-list .item-list__comma-list,
-[dir="rtl"] .item-list .item-list__comma-list {
-  margin: 0;
-}

core/themes/seven/css/components/messages.css

@@ -10,4 +10,12 @@
 .messages pre {
   margin: 0;
 }
+.messages h1, .messages .heading-a,
+.messages h2, .messages .heading-b,
+.messages h3, .messages .heading-c,
+.messages h4, .messages .heading-d,
+.messages h5, .messages .heading-e,
+.messages h6, .messages .heading-f {
+  margin-top: 0;
+}
 

core/themes/seven/css/components/tablesort-indicator.css

@@ -0,0 +1,26 @@
+/**
+ * @file
+ * Tablesort indicator styles.
+ */
+
+.tablesort {
+  float: right; /* LTR */
+  margin-top: 5px;
+  width: 10px;
+  height: 10px;
+}
+[dir="rtl"] .tablesort {
+  float: left;
+}
+.tablesort--asc {
+  background-image: url(../../../../misc/icons/004875/twistie-down.svg);
+}
+a:hover .tablesort--asc {
+  background-image: url(../../../../misc/icons/008ee6/twistie-down.svg);
+}
+.tablesort--desc {
+  background-image: url(../../../../misc/icons/004875/twistie-up.svg);
+}
+a:hover .tablesort--desc {
+  background-image: url(../../../../misc/icons/008ee6/twistie-up.svg);
+}

core/themes/seven/css/theme/install-page.css

@@ -36,6 +36,12 @@
   word-break: break-word;
 }
 
+.install-page .site-version {
+  vertical-align: super;
+  font-size: 0.5em;
+  color: #595959;
+}
+
 @media all and (max-width: 1010px) and (min-width: 48em) {
   .install-page .password-strength,
   .install-page .confirm-parent {