div>
  <div data-expected-width="62"></div>
</div>

<pre>Item min-width: 60px; &amp; border-left-width: 2px;</pre>

<div class="grid directionRTL" data-expected-width="72">
  <div class="minWidth60 borderLeft2" data-expected-width="62"></div>
  <div data-expected-width="62"></div>
</div>

<pre>Item width: 60px; &amp; border-right-width: 4px;</pre>

<div class="grid directionRTL" data-expected-width="74">
  <div class="width60 borderRight4" data-expected-width="64"></div>
  <div data-expected-width="64"></di