[CSS] fix Tree horizontal size

dist/styles/Tree.css

@@ -51,7 +51,7 @@ li .leaf:hover a.settings {
   top: 5px;
 }
 .tree .lefthanded ul {
-  margin-right: 19px;
+  margin-right: 5px;
 }
 .tree .lefthanded ul li {
   margin-right: 10px;
@@ -71,7 +71,7 @@ li .leaf:hover a.settings {
   justify-content: flex-end;
 }
 .tree .righthanded ul {
-  margin-left: 19px;
+  margin-left: 5px;
 }
 .tree .righthanded ul li {
   margin-left: 10px;

dist/styles/Tree.sass

@@ -46,7 +46,7 @@ li
 
   .lefthanded
     ul
-      margin-right : 19px
+      margin-right : 5px
       li
         margin-right: 10px
         padding-right: 5px
@@ -65,7 +65,7 @@ li
           justify-content : flex-end
   .righthanded
     ul
-      margin-left : 19px
+      margin-left : 5px
       li
         margin-left: 10px
         padding-left: 5px