* {margin:0px; padding:0px;}
html, 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, caption, tbody, tfoot, thead , th {
  margin: 0;
  padding: 0;
  border: 0;
  outline: 0;
  font-size: 100%;
  vertical-align: baseline;
  background: transparent;
}
body,html {height:100%; width:100%; font-family:arial,sans-serif; font-size:12px; font-weight:normal}
h1,h2,h3,h4,h5,h6{font-weight:normal;padding:0px;margin:0px;}
a,a:hover {text-decoration:none;}
ul,li{list-style:none;}

/* ESTRUTURA
----------------------------------------------------------------------*/
#maincontainer {width:340px; margin:0px auto;}
#xouter{height:100%; width:100%; display:table; vertical-align:middle;}
#xcontainer { position:relative; vertical-align:middle; display:table-cell; height: 100%; z-index:500;}
/*--------------------------------------------------------------------*/

#conteudo {float:left; width:340px; background-color:#FFF; margin:20px; padding:20px; align:center}