diff --git a/src/app/pages/home/home-page.component.ts b/src/app/pages/home/home-page.component.ts
index 11efc48..efd82a1 100644
--- a/src/app/pages/home/home-page.component.ts
+++ b/src/app/pages/home/home-page.component.ts
@@ -221,20 +221,44 @@ export class HomePageComponent implements OnInit, OnDestroy {
 
       //   d3.select(this.discoveryTargetRef.nativeElement).selectAll('.node-container').call(d3.drag().on('start', started));
 
-      // d3.drag()
-      //   .on('dragstart', (node: Node, i: number) => {
-      //     __this.simulation.stop();
-      //   })
-      //   .on('drag', (node: Node, i: number) => {
-      //     node.fx += d3.event.dx;
-      //     node.fy += d3.event.dy;
-      //     node.x += d3.event.dx;
-      //     node.y += d3.event.dy;
-      //   })
-      //   .on('dragend', (node: Node, i: number) => {
-      //     __this.simulation.stop();
-      //   })
-      //   ;
+      // d3.select(this.discoveryTargetRef.nativeElement).selectAll('.node-container').call(
+      //   d3.drag()
+      //     .on('start', (node: Node, i: number) => {
+      //       __this.simulation.stop();
+      //     })
+      //     .on('drag', (node: Node, i: number) => {
+      //       node.fx += d3.event.dx;
+      //       node.fy += d3.event.dy;
+      //       node.x += d3.event.dx;
+      //       node.y += d3.event.dy;
+      //     })
+      //     .on('end', (node: Node, i: number) => {
+      //       __this.simulation.stop();
+      //     })
+      // );
+
+      d3.select(this.discoveryTargetRef.nativeElement).selectAll('.node-container').call(
+        d3.drag()
+          .on('start', function () {
+            d3.event.sourceEvent.stopPropagation();
+
+            if (!d3.event.active) {
+              __this.simulation.alphaTarget(0.3).restart();
+            }
+
+            d3.event.on('drag', dragged).on('end', ended);
+
+            function dragged() {
+              d3.select(this).attr('cx', d3.event.x).attr('cy', d3.event.y);
+            }
+
+            function ended() {
+              if (!d3.event.active) {
+                __this.simulation.alphaTarget(0);
+              }
+            }
+          })
+      );
 
     }
 
diff --git a/src/assets/image/logo/logo_tomcat.svg b/src/assets/image/logo/logo_tomcat.svg
index 2c91d00..ef60993 100644
--- a/src/assets/image/logo/logo_tomcat.svg
+++ b/src/assets/image/logo/logo_tomcat.svg
@@ -1,51 +1,49 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Generator: Adobe Illustrator 22.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
-<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 viewBox="0 0 66 56" style="enable-background:new 0 0 66 56;" xml:space="preserve">
-<style type="text/css">
-	.st0{fill:none;stroke:#FFFFFF;stroke-width:2;stroke-miterlimit:10;}
-	.st1{fill:#D1A41A;}
-	.st2{fill:#FFDC76;}
-</style>
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+<?xml version="1.0" encoding="utf-8"?>
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+	 viewBox="0 0 66 56" style="enable-background:new 0 0 66 56;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:none;stroke:#FFFFFF;stroke-width:2;stroke-miterlimit:10;}
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+	.st2{fill:#FFDC76;}
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