Hello, i´m creating my website and i need to add div elements, like videos, forms, etc.; this is my website: http://www.albertoporrasmoreno.com/tiendasonline/

This is my actual code; i´m new one

<style type="text/css"><!--
#apDiv1 {
position:relative; width: 225px; height: 70px; z-index: 1; left: 300px; top: 375px; }
#apDiv2 { position: absolute; width: 225px; height: 70px; z-index: 1; left: 400px; top: 675px; }
--></style>
<div id="apDiv1"><iframe src="//www.youtube.com/embed/92Qeg7jKeZI" height="315" width="560" allowfullscreen="" frameborder="0"></iframe></div>
<div id="apDiv2"><a href="http://www.prestashop.com/download/pdf/PrestaShop-Feature-List-es.pdf"><img class="alignnone size-full wp-image-31" alt="BOTON-CARACTERISTICAS-PRESTASHOP" src="http://www.albertoporrasmoreno.com/tiendasonline/wp-content/uploads/2014/01/BOTON-CARACTERISTICAS-PRESTASHOP.jpg" width="641" height="128" /></a></div>


I hope you can help me,
Thanks