map: locate user and show marker

scss/_map.scss

@@ -6,6 +6,10 @@
   width: 100%;
   height: 100%;
 
+  button.locate-user:after {
+    content: '\f2a7';
+  }
+
  .node-alert {
     -webkit-animation: blink 2s linear;
     -webkit-animation-iteration-count: infinite;

scss/main.scss

@@ -158,6 +158,10 @@ button {
   outline: none;
 }
 
+button.active {
+  color: #dc0067 !important;
+}
+
 button:hover {
   background: white;
   color: #dc0067;