improve ui

src/scss/_custom.scss

@@ -14,6 +14,22 @@
     min-width: 250px !important;
 }
 
+.nav-icon {
+	color: #b6b6b6 !important;
+}
+
+.sidebar {
+	background-color: #263f54;
+}
+
+.sidebar-minimizer {
+	background-color: #192a38 !important;
+}
+
+.breadcrumb {
+	padding: 0.1rem 1rem;
+	margin-bottom: 1.25rem;
+}
 
 .box-dashboard-pm {
     margin-top: 10px;