diff --git a/assets/_scss/_buttons.scss b/assets/_scss/_buttons.scss
new file mode 100644
index 0000000..ad0a4cb
--- /dev/null
+++ b/assets/_scss/_buttons.scss
@@ -0,0 +1,8 @@
+// Most btn classes come from Bootstrap
+// See node_modules/bootstrap/scss/_buttons.scss
+.btn-extra-lg {
+    padding: 1.25rem 2.5rem;
+    font-size: 1.4rem;
+    line-height: 1.5;
+    border-radius: 0.3rem;
+}
diff --git a/assets/css/main.scss b/assets/css/main.scss
index e4d6374..ab03227 100644
--- a/assets/css/main.scss
+++ b/assets/css/main.scss
@@ -29,3 +29,4 @@
 @import 'forms-pages';
 @import 'lanyards';
 @import 'a11y-fixes';
+@import 'buttons';
diff --git a/prospectus/index.html b/prospectus/index.html
index ca26a27..4bb9376 100644
--- a/prospectus/index.html
+++ b/prospectus/index.html
@@ -12,6 +12,11 @@ <h1>Code4Lib {{site.data.conf.year}} Sponsor Prospectus</h1>
                 <p>
                     <img src="{{ site.baseurl }}/assets/img/persistent/prospectus-collage.jpg" title="Credit sdellis on Twitter" alt="Code4Lib Collage" width="100%">
                 </p>
+                {% if site.data.conf.sponsor-btn-link != nil %}
+                    <p class="text-center">
+                        <a class="btn btn-primary btn-extra-lg" href="{{site.data.conf.sponsor-btn-link}}">Sponsor Code4Lib {{site.data.conf.year}}</a>
+                    </p>
+                {% endif %}
                 <p>
                   The Code4Lib {{site.data.conf.year}} Conference, scheduled for {{site.data.conf.days[1].date-data | date: "%B %-d"}} - {{site.data.conf.days.last.date-data | date: "%-d"}}{% if site.data.conf.online-only-conference == false %} in {{site.data.conf.location}}{% endif %}, presents an opportunity for vendors, organizations, libraries, and projects to show their support for open and collaborative solutions for higher education, libraries, museums, and archives by providing financial support and attending the conference.
                 </p>