--- a/browser/themes/shared/blockedSite.css
+++ b/browser/themes/shared/blockedSite.css
@@ -58,8 +58,13 @@ body {
 #ignoreWarningButton:hover {
   cursor: pointer;
 }
 
 #ignoreWarning {
   margin-top: 1.2em;
   text-align: end;
 }
+
+#advisory_provider {
+  color: white;
+  text-decoration: underline;
+}

--- a/mobile/android/themes/core/netError.css
+++ b/mobile/android/themes/core/netError.css
@@ -178,16 +178,21 @@ div[collapsed="true"] > .expander + * {
   border: none;
   text-decoration: underline;
   margin: 0;
   margin-inline-start: -20px;
   font-size: smaller;
   border-radius: 0;
 }
 
+#advisory_provider {
+  color: white;
+  text-decoration: underline;
+}
+
 /* On large screen devices (hopefully a 7+ inch tablet, we already center content (see #errorPageContainer above).
    Apply tablet specific styles here */
 @media (min-width: 550px) {
   button {
     min-width: 160px;
     width: auto;
   }