diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index 56c0d7c..e276a82 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -1775,7 +1775,6 @@ function theme_mark($variables) {
  */
 function template_preprocess_item_list(&$variables) {
   $variables['title'] = (string) $variables['title'];
-  $variables['attributes'] = (array) $variables['attributes'];
   $variables['attributes']['class'][] = 'item-list';
 
   foreach ($variables['items'] as &$item) {
diff --git a/core/modules/simpletest/css/simpletest.module.css b/core/modules/simpletest/css/simpletest.module.css
index d3a8afe..0c07945 100644
--- a/core/modules/simpletest/css/simpletest.module.css
+++ b/core/modules/simpletest/css/simpletest.module.css
@@ -35,7 +35,7 @@ table#simpletest-form-table tr.simpletest-group label {
   display: inline;
 }
 
-div.message > ul.item-list {
+div.message > .item-list {
   font-weight: normal;
 }
 
diff --git a/core/modules/system/css/system.theme.css b/core/modules/system/css/system.theme.css
index b98c590..30aa48d 100644
--- a/core/modules/system/css/system.theme.css
+++ b/core/modules/system/css/system.theme.css
@@ -146,11 +146,11 @@ abbr.form-required, abbr.tabledrag-changed, abbr.ajax-changed {
 /**
  * Markup generated by pager.html.twig.
  */
-ul.pager {
+.pager.item-list {
   clear: both;
   text-align: center;
 }
-ul.pager li {
+.pager.item-list li {
   background-image: none;
   display: inline;
   list-style-type: none;
diff --git a/core/modules/views/templates/views-view-summary.html.twig b/core/modules/views/templates/views-view-summary.html.twig
index adf6c16..7358a20 100644
--- a/core/modules/views/templates/views-view-summary.html.twig
+++ b/core/modules/views/templates/views-view-summary.html.twig
@@ -21,7 +21,7 @@
 #}
 <ul class="views-summary item-list">
 {% for id, row in rows %}
-  <li><a href="{{ row.url }}"{{ row_classes[id] }}>{{ row.link }}</a>
+  <li><a href="{{ row.url }}"{{ row.atributes[id] }}>{{ row.link }}</a>
     {% if options.count %}
       ({{ row.count }})
     {% endif %}
diff --git a/core/themes/seven/style.css b/core/themes/seven/style.css
index 4d10d59..ef1c772 100644
--- a/core/themes/seven/style.css
+++ b/core/themes/seven/style.css
@@ -1,113 +1,6 @@
 /**
  * Generic elements.
  */
-body {
-  color: #000;
-  background: #fff;
-  font: normal 81.3%/1.538em "Lucida Grande", "Lucida Sans Unicode", sans-serif;
-}
-a,
-.link {
-  color: #0074bd;
-  text-decoration: none;
-}
-a:hover,
-.link:hover {
-  text-decoration: underline;
-}
-hr {
-  margin: 0;
-  padding: 0;
-  border: none;
-  height: 1px;
-  background: #cccccc;
-}
-summary,
-legend {
-  font-weight: bold;
-  text-transform: uppercase;
-}
-h1,
-h2,
-h3,
-h4,
-h5,
-h6 {
-  font-weight: bold;
-  margin: 10px 0;
-}
-h1 {
-  font-size: 1.538em;
-}
-h2 {
-  font-size: 1.385em;
-}
-h3 {
-  font-size: 1.231em;
-}
-h4 {
-  font-size: 1.154em;
-}
-h5,
-h6 {
-  font-size: 1.077em;
-}
-p {
-  margin: 1em 0;
-}
-dl {
-  margin: 0 0 20px;
-}
-dl dd,
-dl dl {
-  margin-left: 20px; /* LTR */
-  margin-bottom: 10px;
-}
-[dir="rtl"] dl dd,
-[dir="rtl"] dl dl {
-  margin-right: 20px;
-}
-blockquote {
-  margin: 1em 40px;
-}
-address {
-  font-style: italic;
-}
-u,
-ins {
-  text-decoration: underline;
-}
-s,
-strike,
-del {
-  text-decoration: line-through;
-}
-big {
-  font-size: larger;
-}
-small {
-  font-size: smaller;
-}
-sub {
-  vertical-align: sub;
-  font-size: smaller;
-  line-height: normal;
-}
-sup {
-  vertical-align: super;
-  font-size: smaller;
-  line-height: normal;
-}
-nobr {
-  white-space: nowrap;
-}
-abbr,
-acronym {
-  border-bottom: dotted 1px;
-}
-.pager li {
-  padding: 0.5em;
-}
 ul {
   list-style-type: disc;
   list-style-image: none;