v data-expected-width="0" style="margin: 0px 5px;"></div>
  <div data-expected-width="10"></div>
</div>

<pre>grid-template-columns: minmax(auto, 20px) minmax(auto, 20px); item margin width: 10px;</pre>

<div class="grid" style="grid-template-columns: minmax(auto, 20px) minmax(auto, 20px);">
  <div data-expected-width="30" style="margin: 0px 5px;"></div>
  <div data-expected-width="40"></div>
</div>

<pre>grid-template-columns: minmax(auto, 0px) minmax(auto, 0px); item padding width: 10px;</pre>

<div class