diff --git a/static/topology3D/css/d3-context-menu.css b/static/topology3D/css/d3-context-menu.css
new file mode 100644
index 0000000..334513c
--- /dev/null
+++ b/static/topology3D/css/d3-context-menu.css
@@ -0,0 +1,78 @@
+.d3-context-menu {
+	position: absolute;
+	display: none;
+	background-color: #f2f2f2;
+	border-radius: 4px;
+
+	font-family: Arial, sans-serif;
+	font-size: 14px;
+	min-width: 150px;
+	border: 1px solid #d4d4d4;
+
+	z-index:1200;
+}
+
+.d3-context-menu ul {
+	list-style-type: none;
+	margin: 4px 0px;
+	padding: 0px;
+	cursor: default;
+}
+
+.d3-context-menu ul li {
+	padding: 4px 16px;
+
+	-webkit-touch-callout: none; /* iOS Safari */
+	-webkit-user-select: none;   /* Chrome/Safari/Opera */
+	-khtml-user-select: none;    /* Konqueror */
+	-moz-user-select: none;      /* Firefox */
+	-ms-user-select: none;       /* Internet Explorer/Edge */
+	user-select: none;
+}
+
+.d3-context-menu ul li:hover {
+	background-color: #4677f8;
+	color: #fefefe;
+}
+
+/*
+	Header
+*/
+
+.d3-context-menu ul li.is-header,
+.d3-context-menu ul li.is-header:hover {
+	background-color: #f2f2f2;
+	color: #444;
+	font-weight: bold;
+	font-style: italic;
+}
+
+/*
+	Disabled
+*/
+
+.d3-context-menu ul li.is-disabled,
+.d3-context-menu ul li.is-disabled:hover {
+	background-color: #f2f2f2;
+	color: #888;
+	cursor: not-allowed;
+}
+
+/*
+	Divider
+*/
+
+.d3-context-menu ul li.is-divider {
+	padding: 0px 0px;
+}
+
+.d3-context-menu ul li.is-divider:hover {
+	background-color: #f2f2f2;
+}
+
+.d3-context-menu ul hr {
+	border: 0;
+    height: 0;
+    border-top: 1px solid rgba(0, 0, 0, 0.1);
+    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
+}
\ No newline at end of file