The first thought is to use absolute positioning within .card.
.card { width:100px; height:50px; position:relative; }
.attack { width:100px; height:25px; position:absolute; top:25px; }
.defense { width:100px; height:25px; position:absolute; top:0; }
In this example, .attack will be (visually) below .defense. But note, if you disable CSS, the true arrangement will be seen.