.fondoVentanaEmergente {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    z-index: 1001;
    opacity: .60;
    -moz-opacity: 0.60;
    filter: alpha(opacity=60);
}

.ventanaEmergente {
    background-color: #ffffff;
    background-image: url("../../Images/cabecera.gif");
    background-repeat: repeat-x;
    display: none;
    position: absolute;
    width: 50%;
    min-height: 7em;
    max-height: 30em;
    padding: 16px;
    color: #333;
    z-index: 1002;
    overflow: auto;
}

    .ventanaEmergente .contenedorVentana {
        text-align: center;
    }

.signalCargando {
    color: blue;
    border: 5px solid #333;
    border-radius: 30px;
    height: 30px;
    left: 50%;
    margin: 0 0 0 -15px;
    opacity: 0;
    position: absolute;
    top: 50%;
    width: 30px;
    animation: pulsate 1s ease-out;
    animation-iteration-count: infinite;
}

@keyframes pulsate {
    0% {
        transform: scale(.1);
        opacity: 0.0;
    }

    50% {
        opacity: 1;
    }

    100% {
        transform: scale(1.2);
        opacity: 0;
    }
}

@media only screen and (max-width: 48.000em) {
    .ventanaEmergente {
        height: 10em;
    }

    .signalCargando {
        margin: 2em 0 0 -15px;
    }
}