Remove sidebar footer when sidebar is gone

The two footers say the same thing

Author: kaushik327

_includes/components/sidebar.html

@@ -30,6 +30,6 @@
       {% assign color_scheme = "light" %}
     {% endif %}
 
-    {{site.title}} is a member of <div><a href="https://acm.illinois.edu"><img style="width: 50%;" src="/assets/images/acm-wordmark-{{ color_scheme }}.png"/></a></div>.
+    {{site.title}} is a member of <div><a href="https://acm.illinois.edu"><img style="width: 50%;" src="/assets/images/acm-wordmark-{{ color_scheme }}.png"/></a></div>
   </footer>
 </div>

_includes/footer_custom.html

@@ -1,5 +1,5 @@
 {%- if site.footer_content -%}
   <p class="text-small text-grey-dk-100 mb-0">{{ site.footer_content }}</p>
 {%- else -%}
-  <p class="text-small text-grey-dk-100 mb-0">Copyright &copy; {{ site.time | date: '%Y' }} by {{ site.title }}, a member of ACM@UIUC.</p>
+  <p class="text-small text-grey-dk-100 mb-0">Copyright &copy; {{ site.time | date: '%Y' }} by {{ site.title }}, a member of <a href="https://acm.illinois.edu">ACM@UIUC</a>.</p>
 {%- endif -%}

_sass/layout.scss

@@ -53,6 +53,16 @@
       }
     }
   }
+
+  // Don't display the sidebar footer when the sidebar is gone, since
+  // it says the same thing as the other footer
+  .site-footer {
+    display: none;
+
+    @include mq(md) {
+      display: block;
+    }
+  }
 }
 
 .main {