iv>

<p>Both row and column gaps are based on definite sizes, they will reduce the available space for tracks; however, repeat auto-fill allows all of them to fit.</p>
<div class="">
    <div class="grid width400 height200 autoRepeat columnGap10Percent rowGap20Percent" data-expected-width="400" data-expected-height="200">
        <div class="firstRowFirstColumn"   data-offset-x="0"   data-offset-y="0"  data-expected-width="100" data-expected-height="50">XXX X XX X</div>
        <div class="firstRowSecondCol