I put a button on a div but when you add it, the div increases a lot and is stuck to the footer, besides the button leaves the div, I do not know what it can be.
<div class='caja'>--CONTENIDO</div>
<a href="javascript:cargar();" class="boton">MÁS</a>
<style>
.caja {
height: auto;
background: #fff;
width: 100%;
margin: 0 auto;
position: relative;
bottom: 630px;
}
.boton
background: #ff4000;
color: #fff;
border-radius: 5px;
padding: 10px;
font-style: normal;
width: 20%;
margin: 0 auto;
display: block;
position: absolute;
bottom: 0px;
right: 0;
left: 0;
}
</style>