Fluid video wrapper for docs <iframe> embeds

styles/_layout.scss

@@ -77,4 +77,20 @@
       margin-right: auto;
     }
   }
+}
+
+/******************************************************************************
+ * Fluid video embeds
+*******************************************************************************/
+.video-wrap {
+  position: relative;
+  padding-bottom: 56.25%;
+  
+  iframe {
+    width: 100%;
+    height: 100%;
+    position: absolute;
+    left: 0;
+    top: 0;
+  }
 }