<div class="col-md-3">

    <div class="thumbnail cardstack"
         style="padding: 0; height:153px; background-color: grey; opacity: 0.5;  text-align:center; position:relative;">
        <a href="{% url "card:card_new" deck_id %}"><span class="clickWholeDiv"></span></a>

        <h1 style="font-size:160pt; margin-top:-41px;">+</h1>
    </div>
</div>

<div class="col-md-3">

    <div class="thumbnail cardstack"
         style="padding: 0; height:153px; background-color: grey; opacity: 0.5; overflow:hidden; text-align:center; position:relative;">
        <a href="{% url "card:card_new" deck_id %}"><span class="clickWholeDiv"></span></a>

        <h1 style="font-size:160pt; margin-top:-41px;">+</h1>
    </div>
</div>

Fix too large + symbol in add card div
Fix too large + symbol in add card div
