/*	Introdución  */



body {
    background: #000000 url(back.jpg) no-repeat 50% 0px;
    color:#000;
}



/*	Acceso */

.clear { /* generic container (i.e. div) for floating buttons */
    overflow: hidden;
    width: 100%;
    height: 100%;
}

a.button{
    background:url(button.png) no-repeat 0 0;;
    display:block;
    line-height:29px;
    margin-top:90px;
    margin-left:570px;
    text-decoration:none;
    width:128px;
    height:57px;
}
a:hover.button{
    background:url(button.png) no-repeat 0 -60;;
}