Add some space inbetween the different directives

Author: g1eb

index.html

@@ -30,6 +30,10 @@ <h1>Date</h1>
     on-close="closed()">
   </date-range>
 
+  <br />
+  <br />
+  <br />
+
   <h1>Time</h1>
   <time-range
     start="start"
@@ -41,6 +45,10 @@ <h1>Time</h1>
     on-close="closed()">
   </time-range>
 
+  <br />
+  <br />
+  <br />
+
   <h1>Datetime</h1>
   <datetime-range
     start="start"