{style}
{literal}
    input.ow_credits_input { width: 100px; }
{/literal}
{/style}

{form name='grant-credits-form'}
<div class="ow_center">
    {text key='usercredits+grant_amount'} {input name='amount' class='ow_credits_input'}&nbsp;
    {submit name='grant'}
</div>
{/form}