amigos porq el margin top no separa la caja interior de la exterios
Código HTML:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Musica Actual</title>
<style type="text/css">
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, font, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td {
margin: 0;
padding: 0;
border: 0;
outline: 0;
font-size: 100%;
background: transparent;
}
section ,header ,article ,footer{margin:0; padding:0; display:block;}
#cp{width:200px; height:300px; background:#00FF00;}
article{width:190px; height:200px; background:#FF0000; margin-top:5px;}
</style>
<body>
<header>
</header>
<section id="cp">
<article></article>
</section>
</body>
</html>