<style>
.buy-param{
display: inline-block;
background: linear-gradient(rgb(255, 255, 255), rgb(206, 206, 206)) rgb(236, 236, 236);
padding: 2px 27px;
border-radius: 3px;
font: 12px Arial;
border-width: 1px;
border-style: solid;
border-color: #CCC #CCC #AAA;
}
</style>
<div>
<label>
<input class="buy-chexbox" onchange="calculateTotalPacketCost()" type="checkbox" name="user_packet_groups[]" value="{$key}" />
<span class="buy-param">Купить</span>
</label>
</div>
<div>
<label>
<input class="buy-chexbox" onchange="calculateTotalPacketCost()" type="checkbox" name="user_packet_groups[]" value="{$key}" />
<span class="buy-param">Купить</span>
</label>
</div>
<div>
<label>
<input class="buy-chexbox" onchange="calculateTotalPacketCost()" type="checkbox" name="user_packet_groups[]" value="{$key}" />
<span class="buy-param">Купить</span>
</label>
</div>