.articulo { color: rgb(0, 0, 0);
padding-left: 50px;
padding-right: 50px;
width: 800px;
background-position: center top;
background-repeat: no-repeat;
padding-top: 60px;
background-image: url(http://www.aprendizdecasino.es/imag/pergamino.gif);
font-size: 14px;
font-family: Times New Roman;
font-style: normal;
font-weight: bold;
background-repeat: repeat;
border-top-style: double;
border-left-style: double;
border-right-style: double;
border-bottom-style: double;
border-left-color: rgb(255,255,255);
border-right-color: rgb(255,255,255);
border-top-color: rgb(255,255,255);
border-bottom-color: rgb(255,255,255);
border-top-width: 10px;
border-left-width: 10px;
border-right-width: 10px;
border-bottom-width: 10px;
 margin:0 auto;

}