diff --git a/demos/dialog.html b/demos/dialog.html
index c6935453301..53cc657804b 100644
--- a/demos/dialog.html
+++ b/demos/dialog.html
@@ -113,29 +113,29 @@ <h2 id="mdc-dialog-default-label" class="mdc-dialog__header__title">
           </div>
           <div class="mdc-dialog__backdrop"></div>
         </aside>
-        
+
         <aside id="mdc-dialog-colored-footer-buttons"
-        	    class="mdc-dialog"
-        	    role="alertdialog"
-        	    aria-hidden="true"
-        	    aria-labelledby="mdc-dialog-colored-footer-button-label"
-        	    aria-describedby="mdc-dialog-colored-footer-button-description">
-    	    <div class="mdc-dialog__surface">
-    	      <header class="mdc-dialog__header">
-    	        <h2 id="mdc-dialog-colored-footer-button-label" class="mdc-dialog__header__title">
-    	          Use Google's location service?
-    	        </h2>
-    	      </header>
-    	      <section id="mdc-dialog-colored-footer-button-description" class="mdc-dialog__body">
-    	        Let Google help apps determine location. This means sending anonymous location data to Google, even when no apps are running.
-    	      </section>
-    	      <footer class="mdc-dialog__footer">
-    	        <button type="button" class="mdc-button mdc-dialog__footer__button mdc-dialog__footer__button--cancel">Decline</button>
-    	        <button type="button" class="mdc-button mdc-dialog__footer__button mdc-dialog__footer__button--accept mdc-dialog__action">Accept</button>
-    	      </footer>
-    	    </div>
-    	    <div class="mdc-dialog__backdrop"></div>
-      	</aside>
+               class="mdc-dialog"
+               role="alertdialog"
+               aria-hidden="true"
+               aria-labelledby="mdc-dialog-colored-footer-button-label"
+               aria-describedby="mdc-dialog-colored-footer-button-description">
+          <div class="mdc-dialog__surface">
+            <header class="mdc-dialog__header">
+              <h2 id="mdc-dialog-colored-footer-button-label" class="mdc-dialog__header__title">
+                Use Google's location service?
+              </h2>
+            </header>
+            <section id="mdc-dialog-colored-footer-button-description" class="mdc-dialog__body">
+              Let Google help apps determine location. This means sending anonymous location data to Google, even when no apps are running.
+            </section>
+            <footer class="mdc-dialog__footer">
+              <button type="button" class="mdc-button mdc-dialog__footer__button mdc-dialog__footer__button--cancel">Decline</button>
+              <button type="button" class="mdc-button mdc-dialog__footer__button mdc-dialog__footer__button--accept mdc-dialog__action">Accept</button>
+            </footer>
+          </div>
+          <div class="mdc-dialog__backdrop"></div>
+        </aside>
 
         <aside id="mdc-dialog-with-list"
                class="mdc-dialog"
@@ -258,12 +258,12 @@ <h2 id="mdc-dialog-default-label" class="mdc-dialog__header__title">
         document.querySelector('#dialog-with-list-activation').addEventListener('click', function (evt) {
           dialogScrollable.lastFocusedTarget = evt.target;
           dialogScrollable.show();
-      	});
+        });
         var dialogColoredButton = new mdc.dialog.MDCDialog(document.querySelector('#mdc-dialog-colored-footer-buttons'));
         document.querySelector('#colored-footer-button-dialog-activation').addEventListener('click', function (evt) {
-      	  dialogColoredButton.lastFocusedTarget = evt.target;
+          dialogColoredButton.lastFocusedTarget = evt.target;
           dialogColoredButton.show();
-      	});
+        });
       })();
     </script>
     <script>