body {
    width: 760px;
    margin: 10px;
    background-color: #3399FF;
    text-align: center;
    margin: 0 auto 0 auto;
    vertical-align: middle;
}

#envolvente
{
    text-align: center;
    background-color: #3399FF;
    width: 100%;
    margin-left:auto;
    margin-right:auto;
    vertical-align: middle;

}
#cabecera
{
    text-align: center;
    background-color: #FFFFFF;
    width: 760px;
    right: auto;
    left: auto;
    border-bottom-width: 1px;
    border-bottom-style: solid;
    border-bottom-color: #000000;
}
#TituloRuta
{
    text-align: left;
    float: left;
    width: 606px;
    right: auto;
    left: auto;
}
#dcha
{
    float: right;
    width: 140px;
    padding: 2px;
    font-family: "trebuchet MS";
    font-size: small;
}
#cuerpo
{
    float: left;
    text-align: justify;
    font-family: "trebuchet MS";
    width: 606px;
    font-size: small;
    padding-top: 8px;
}
a
{
    text-decoration: none;
}
#dchaDefalut
{
    width: 200px;
    right: auto;
    left: auto;
    float: right;
}
#centro
{
    float: left;
    width: 606px;
    right: auto;
    left: auto;
}
#izqda
{
    font-family: "Trebuchet MS";
    font-size: small;
    text-align: left;
    width: 142px;
    float: left;
    clip: rect(auto, auto, auto, auto);
    position: absolute;
}