html, body, div,a,img {background: transparent;border: 0;font-size: 99%;font-family: "Verdana", Geneva, sans-serif;margin: 0;outline: none;padding: 0;vertical-align: baseline;}
body, #container {overflow: hidden;background:#D7E7E1;}
#container {width:100%;height:100%; margin:0;}
#barra {position: relative; height:265px; width:1620px; margin: 0 auto;background:#ffffff}
#left {width:810px;height:265px;position:absolute; background: url(../imagenes/presentacion-left.jpg) no-repeat center; z-index:1; }
#center {width:380px;height:265px;position:absolute;background:url(../imagenes/presentacion-center.jpg) no-repeat;opacity:0;filter:alpha(opacity=0)}
#right {width:810px;height:265px; background: url(../imagenes/presentacion-right.jpg) no-repeat center;position:absolute;}
#entrar {position:absolute;top:195px; left:50%;display: block;width:75px;height:40px;z-index:1}