*{
    padding: 0;
    margin: 0;
    font-size: 11px;
    font-family: 'Verdana', Georgia;
}
#header {
    background: url("http://138.117.76.170:10000/proxy/p2.php/RPP/public_html/imagenes/bannerfondo.png") repeat-x scroll 0 0 #ffffff;
    height: 126px;
    position: relative;
    width: 100%;
}
#datos-usuario {
    bottom: 0;
    font-weight: bold;
    position: absolute;
    right: 20px;
}
#contenedor {
    margin: 0 auto;
    position: relative;
    width: 980px;
}
#lateral {
    float: left;
    margin-top: 12px;
    padding-left: 15px;
    position: absolute;
    width: 230px;
    z-index: 100;
}
#contenido {
    box-shadow: 0 0 3px #b5b6b5;
    position: relative;
    width: 980px;
}
#pie{
    background:url("http://138.117.76.170:10000/proxy/p2.php/RPP/public_html/imagenes/pie.png") repeat-x; 
    height: 30px;
    color: #FFFFFF;
    padding: 12px;
    border-top: 2px solid #C5C5C5;
}
#principal, #Principal {
    padding: 12px 12px 12px 260px;
    position: relative;
    top: 0;
    min-height: 200px;
}
#titulo {
    background: url("http://138.117.76.170:10000/proxy/p2.php/RPP/public_html/imagenes/pie.png") repeat-x scroll 0 0 rgba(0, 0, 0, 0);
    box-shadow: 1px 1px 3px #000000;
    color: #ffffff;
    font-size: 14px;
    font-weight: bold;
    height: 40px;
    line-height: 40px;
    padding-left: 12px;
}
#Cuerpo {
    box-shadow: 0 0 2px #000000;
    margin-top: 12px;
    overflow: hidden;
}
.error{
    background-color: red;
    padding: 6px 12px;
    border-radius: 4px;
    color: white;
    font-weight: bold;
    margin-left: 16px;
    margin-top: 6px;
    position: absolute;
}
.error:before{ /* Este es un truco para crear una flechita */
    content: '';
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-right: 8px solid red;
    border-left: 8px solid transparent;
    left: -16px;
    position: absolute;
    top: 5px;
}

input, select {
    font-size: 12px;
    padding: 2px 5px;
}