Button inside LayerSlider WP

Hi,

I placed a button inside my layer Slider and I want to make a bit bigger, but somehow is not working.

this is the code I used:

<form action="http://paisagismoonline-com-br.web22.redehost.com.br/nsite1/como-funciona/">
    <input type="submit" value="Assista ao Vídeo e Veja Como é Fácil   >>">
</form>

and ccs: `.button {
font: bold 25px helvetica;
text-decoration: none;
background-color: #f5f6cc;
color: #717304;
padding: 45px 55px 45px 55px;
border-top: 2px solid #ffffff;
border-right: 1px solid #ffffff;
border-bottom: 1px solid #fffffff;
border-left: 1px solid #fffffff;
}`

Page link: http://paisagismoonline-com-br.web22.redehost.com.br/nsite1/

Thanks,
Fabiana.