How can I use if statement with v-for?

I wanna rendering inner matrix in cell matrix by input value. But only render to selected element.

this is my codepen. https://codepen.io/ofleaf/pen/EJgoVp

I think should modify below code.

<div class="inner-layout"
       v-for="val in calInnerLayout"
       :style="{ width: calInnerLayoutWidth + '%', height: calInnerLayoutHeight + '%' }"></div>

How can I use if statement with v-for? I would like to compare the parent element of the current inner element with the active element and then update that inner element if it matches, otherwise keep the existing value.