7 files changed, 58 insertions, 0 deletions
diff --git a/project/assets/css/default.css b/project/assets/css/default.css
index 5655a27..287f03b 100644
--- a/project/assets/css/default.css
+++ b/project/assets/css/default.css
@@ -145,3 +145,17 @@ div.nav ul li {
 }
 
 
+
+
+/* Evenly spaced footer images. */
+
+div.footer {
+    display: flex;
+    justify-content: center;
+}
+
+div.footer a {
+    margin: 1em 1em 1em 1em;
+}
+
+
diff --git a/project/assets/img/valid-css.png b/project/assets/img/valid-css.png
new file mode 100644
index 0000000..e65a388
--- /dev/null
+++ b/project/assets/img/valid-css.png
diff --git a/project/assets/img/valid-mathml20.png b/project/assets/img/valid-mathml20.png
new file mode 100644
index 0000000..f177679
--- /dev/null
+++ b/project/assets/img/valid-mathml20.png
diff --git a/project/assets/img/valid-xhtml11.png b/project/assets/img/valid-xhtml11.png
new file mode 100644
index 0000000..1529ac9
--- /dev/null
+++ b/project/assets/img/valid-xhtml11.png
diff --git a/project/templates/base.xhtml b/project/templates/base.xhtml
index 4258f12..596ff97 100644
--- a/project/templates/base.xhtml
+++ b/project/templates/base.xhtml
@@ -27,6 +27,10 @@
 {% block content -%}
 {%- endblock %}
     </div>
+    <div class="footer">
+{%- block footer -%}
+{%- endblock %}
+    </div>
     <hr />
   </div>
 </body>
diff --git a/project/templates/base_math.xhtml b/project/templates/base_math.xhtml
index fb6f429..834c116 100644
--- a/project/templates/base_math.xhtml
+++ b/project/templates/base_math.xhtml
@@ -11,3 +11,26 @@
 {%- endblock -%}
 
 
+
+{%- block footer %}
+        <a href="http://validator.w3.org/check?uri=referer">
+            <img src="/img/valid-xhtml11.png"
+                 alt="Valid XHTML 1.1"
+                 height="31"
+                 width="88" />
+        </a>
+        <a href="http://validator.w3.org/check?uri=referer">
+            <img src="/img/valid-mathml20.png"
+                 alt="Valid MathML 2.0"
+                 height="31"
+                 width="88" />
+        </a>
+        <a href="http://jigsaw.w3.org/css-validator/check/referer">
+            <img src="/img/valid-css.png"
+                 alt="Valid CSS"
+                 height="31"
+                 width="88" />
+        </a>
+{%- endblock -%}
+
+
diff --git a/project/templates/base_plain.xhtml b/project/templates/base_plain.xhtml
index 0f26e40..454cc0e 100644
--- a/project/templates/base_plain.xhtml
+++ b/project/templates/base_plain.xhtml
@@ -11,3 +11,20 @@
 {%- endblock -%}
 
 
+
+{%- block footer %}
+        <a href="http://validator.w3.org/check?uri=referer">
+            <img src="/img/valid-xhtml11.png"
+                 alt="Valid XHTML 1.1"
+                 height="31"
+                 width="88" />
+        </a>
+        <a href="http://jigsaw.w3.org/css-validator/check/referer">
+            <img src="/img/valid-css.png"
+                 alt="Valid CSS"
+                 height="31"
+                 width="88" />
+        </a>
+{%- endblock -%}
+
+