assets: update banner text and font size

Banner text size is increased to 18px.

The text is updated to indicate that redirects will happen in the next
few weeks.

Learn more now points to https://golang.org/issue/43178.

Change-Id: I889cee54acb5282c3b9d2c80d840074b1278ef00
Reviewed-on: https://go-review.googlesource.com/c/gddo/+/285254
Trust: Julie Qiu <julie@golang.org>
Run-TryBot: Julie Qiu <julie@golang.org>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
diff --git a/gddo-server/assets/site.css b/gddo-server/assets/site.css
index 15e353e..7166dda 100644
--- a/gddo-server/assets/site.css
+++ b/gddo-server/assets/site.css
@@ -123,10 +123,11 @@
     align-items: center;
     background-color: #fedc00;
     display: flex;
+    font-size: 18px;
     justify-content: center;
     margin-bottom: 20px;
     min-height: 40px;
-    padding: 8px 16px;
+    padding: 16px;
 }
 
 .banner-separator {
diff --git a/gddo-server/assets/templates/layout.html b/gddo-server/assets/templates/layout.html
index 37366f4..e9ca9b7 100644
--- a/gddo-server/assets/templates/layout.html
+++ b/gddo-server/assets/templates/layout.html
@@ -36,7 +36,7 @@
     <div>
       <a href="?redirect=on"><b>Set default to always use pkg.go.dev</b></a>
       <span class="banner-separator">|</span>
-      Requests to this page will redirect to {{template "PkgGoDevLink" $}} in early 2021. <a href="https://blog.golang.org/godoc.org-redirect">Learn More.</a>
+      Requests to this page will redirect to {{template "PkgGoDevLink" $}} in the next few weeks. <a href="https://golang.org/issue/43178">Learn More.</a>
     </div>
 </div>