Show a banner with a gRPConf 2023 speaker callout (#1156)

assets/scss/_grpc.scss

@@ -226,9 +226,10 @@ c - Component (Aware of its content/context...)
   width: 100%;
   position: fixed;
   margin-left: -15px;
+  padding-top: 15px;
   z-index: 32;
   top: 4rem;
-  background: $gray-100;
+  background: $light;
   text-align: center;
 
   & p {

config.yaml

@@ -37,7 +37,7 @@ params:
     navbar_translucent_over_cover_disable: true
     sidebar_menu_compact: true
 
-  show_banner: false
+  show_banner: true
 
   fonts:
     - name: Open Sans

layouts/partials/banner.html

@@ -1,12 +1,11 @@
 {{ if site.Params.show_banner -}}
 <div class="o-banner">
   <p>
-    For
-    <a href="https://events.linuxfoundation.org/grpc-conf/" target="_blank" rel="noopener">
-      <strong>gRPC Conf 2020</strong></a>
-    session videos, visit the
-    <a href="https://www.youtube.com/playlist?list=PLj6h78yzYM2NN72UX_fdmc5CZI-D5qfJL" target="_blank" rel="noopener">
-      CNCF YouTube channel</a>
+    <a href="https://events.linuxfoundation.org/grpc-conf" target="_blank" rel="noopener">
+      <strong>gRPConf 2023</strong></a>
+    is happening on Sep 20th -
+    <a href="https://events.linuxfoundation.org/grpc-conf/program/cfp" target="_blank" rel="noopener">
+      <strong>submit your talk proposal now!</strong></a>
   </p>
 </div>
 {{ end -}}