LT-275: Creating final measure flow using selectTree component

Packages/design/styles/components/selectTree.styl

@@ -58,6 +58,7 @@ $gray6 = #303030
 .select-tree-root
   display: inline-block
   position: relative
+  z-index: 0
 
   &>.tree-content
     border: 1px solid $gray3
@@ -183,6 +184,9 @@ $gray6 = #303030
         line-height: 20px
         margin: 0
 
+      label
+        display: block
+
 .select-tree-root
 
   &>.tree-content