diff --git a/github-dark.css b/github-dark.css
index 68a67043f..7a8e66962 100644
--- a/github-dark.css
+++ b/github-dark.css
@@ -6497,8 +6497,9 @@
     border: 0;
     box-shadow: none;
   }
-  /* github.com mobile: "box-shadow: none" */
-  body[class="page-responsive"] .header-search-prototype .header-search-wrapper.focus {
+  /* github.com mobile: "#fafbfc", "box-shadow: none" */
+  body[class="page-responsive"] .header-search-prototype .header-search-wrapper:focus-within {
+    background-color: #181818;
     box-shadow: none;
   }
   /* github.com mobile: "none", "0", "box-shadow: none" */
@@ -6526,13 +6527,9 @@
     color: #afafaf;
     border: 0;
   }
-  /* github.com mobile: "#f6f8fa" */
+  /* github.com mobile: "0" */
   body[class="page-responsive"] .header-search-prototype .site-search-close-button {
-    background: #222;
-  }
-  /* github.com mobile: "fill: #24292e" */
-  body[class="page-responsive"] .header-search-prototype .site-search-close-button svg {
-    fill: #bebebe;
+    border: 0;
   }
   /* github.com mobile: "none" */
   body[class="page-responsive"] .header-search-prototype .site-search-filter-button {
@@ -6556,14 +6553,9 @@
   body[class="page-responsive"] .header-search-prototype .ems-result-types {
     border-right: 1px solid #343434;
   }
-  /* github.com mobile: "#fafbfc" */
-  body[class="page-responsive"] .header-search-prototype .site-search-filter-button-active {
-    background-color: #181818;
-  }
-  /* github.com mobile: "color: #24292e !important", "#fafbfc" */
+  /* github.com mobile: "color: #24292e !important" */
   body[class="page-responsive"] .header-search-prototype .jump-to-field-active {
     color: #cdcdcd !important;
-    background-color: #181818;
   }
   /* github.com mobile: "color: #586069 !important" */
   body[class="page-responsive"] .header-search-prototype .jump-to-field-active:-ms-input-placeholder {
@@ -19205,8 +19197,9 @@
     border: 0;
     box-shadow: none;
   }
-  /* github.com: "box-shadow: none" */
-  .header-search-prototype .header-search-wrapper.focus {
+  /* github.com: "#fafbfc", "box-shadow: none" */
+  .header-search-prototype .header-search-wrapper:focus-within {
+    background-color: #181818;
     box-shadow: none;
   }
   /* github.com: "none", "0", "box-shadow: none" */
@@ -19234,13 +19227,9 @@
     color: #afafaf;
     border: 0;
   }
-  /* github.com: "#f6f8fa" */
+  /* github.com: "0" */
   .header-search-prototype .site-search-close-button {
-    background: #222;
-  }
-  /* github.com: "fill: #24292e" */
-  .header-search-prototype .site-search-close-button svg {
-    fill: #bebebe;
+    border: 0;
   }
   /* github.com: "none" */
   .header-search-prototype .site-search-filter-button {
@@ -19264,14 +19253,9 @@
   .header-search-prototype .ems-result-types {
     border-right: 1px solid #343434;
   }
-  /* github.com: "#fafbfc" */
-  .header-search-prototype .site-search-filter-button-active {
-    background-color: #181818;
-  }
-  /* github.com: "color: #24292e !important", "#fafbfc" */
+  /* github.com: "color: #24292e !important" */
   .header-search-prototype .jump-to-field-active {
     color: #cdcdcd !important;
-    background-color: #181818;
   }
   /* github.com: "color: #586069 !important" */
   .header-search-prototype .jump-to-field-active:-ms-input-placeholder {