.fadeIn {
    -webkit-animation-duration: 4s;
    animation-duration: 4s;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both; /*se cumple de ida y de regreso*/
    -webkit-animation-name: fadeIn;
    animation-name: fadeIn;
}

/*Aqui se definen las animaciones*/
@keyframes fadeIn { 
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}


.fadeInDown {
    -webkit-animation-duration: 1s;
    animation-duration: 1s;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both; /*se cumple de ida y de regreso*/
    -webkit-animation-name: fadeInDown;
    animation-name: fadeInDown;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        -webkit-transform: translate3d(0,-100%,0);
        transform: translate3d(0,-100%,0);
    }
    to {
        opacity: 1;
        -webkit-transform: translate3d(0,0,0);
        transform: translate3d(0,0,0);
    }
}

.fadeInUp {
    -webkit-animation-duration: 1s;
    animation-duration: 1s;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both; /*se cumple de ida y de regreso*/
    -webkit-animation-name: fadeInDown;
    animation-name: fadeInDown;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        -webkit-transform: translate3d(0,100,0);
        transform: translate3d(0,100,0);
    }
    to {
        opacity: 1;
        -webkit-transform: translate3d(0,0,0);
        transform: translate3d(0,0,0);
    }
}