Increase tap target on hamburger menu

app/assets/stylesheets/new_nav.scss

@@ -388,6 +388,12 @@ header.navbar-gitlab-new {
   align-self: center;
   color: $gl-text-color-secondary;
 
+  @media (max-width: $screen-xs-max) {
+    padding-left: 17px;
+    margin-left: 33px;
+    border-left: 1px solid $gl-text-color-quaternary;
+  }
+
   .avatar-tile {
     margin-right: 4px;
     border: 1px solid $border-color;

app/assets/stylesheets/new_sidebar.scss

@@ -442,7 +442,6 @@ $new-sidebar-collapsed-width: 50px;
   padding: 6px 16px;
   margin: 0 16px 0 -15px;
   height: 46px;
-  border-right: 1px solid $gl-text-color-quaternary;
 
   i {
     font-size: 20px;
@@ -451,8 +450,8 @@ $new-sidebar-collapsed-width: 50px;
 
   @media (max-width: $screen-xs-max) {
     display: inline-block;
-    height: 16px;
-    padding: 0 16px;
+    position: absolute;
+    top: 2px;
 
     i {
       font-size: 18px;