[dev] Pivot samples. Style fixed.

Author: Sorokin-Oleg

src/index.css

@@ -138,7 +138,7 @@ body,
 
 .dhx_sample-container__sidebar {
   width: 20%;
-  margin-left: 20px;
+  margin: 20px 0 0 20px;
   border: 1px solid #dfdfdf;
   padding: 10px;
   height: 600px;