It's not possible...

The right way it's to make it in css.

<div class="cards-container">
  @for(tool of toolsList.default; track tool.name) {
    <div class="m-1">
      ...
    </div>
  }
</div>

.cards-container{
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
}