#back-video {
    position: absolute;
    right: 0;
    top: 0;
    z-index: -1;
    display: block;
    width: 100%;
    transition: all 0.5s ease 0s;
}

@keyframes saltarAnimacion {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-20px);
  }
}

#scrollButton {
    position: fixed;
    display: flex;
    bottom: 20px;
    right: 20px;
    padding: 15px;
    background-color: #ffffff;
    color: #000000;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease 0s;
    animation: saltarAnimacion .8s infinite alternate;
}

#scrollButton:hover {
    transform: scale(1.1);
    background-color: #e2f1f8;
    color: #35a3a3;
}

body { background-color: rgb(241, 254, 255); }

li.lista {
    display: inline-block;
    width: 42%;
    margin-bottom: 40px;
    transition: all 0.5s ease 0s;
}

ul#lista {
    margin-left: auto;
    margin-right: auto;
    margin-top: 58%;
    opacity: 0;
}

h1.titulos {
    margin-top: 25px;
    font-size: 30px;
}

.parrafo {
    text-align: justify;
    margin-top: 5px;
    font-size: 17px;
}

#imagen-todo {
    width: 50%;   
    height: 100%;
    margin-left: 150px;
    -webkit-box-shadow: -10px 10px 0px 1px rgba(0,0,0,0.75);
    -moz-box-shadow: -10px 10px 0px 1px rgba(0,0,0,0.75);
    box-shadow: -10px 10px 0px 1px rgba(0,0,0,0.75);
    transition: all 0.3s ease 0s;
}

#back-image {
    opacity: 0;
    visibility: hidden;
    height: 500px;
    width: 80%;
    margin-left: 10%;
}

.elemento-oculto {
    opacity: 0; 
    transition: opacity .3s; 
  }

/* Responsive */
@media screen and (max-width: 2000px) {

    #imagen-todo {
        width: 30%;
        margin-left: 280px;
    }
    
}

@media screen and (max-width: 1800px) {

    #imagen-todo {
        width: 300px;
        margin-bottom: 5%;
    }
    
}


@media screen and (max-width: 1450px) {
    
    #imagen-todo { margin-left: 200px; }
    
}


@media screen and (max-width: 1320px) {
    
    #imagen-todo {
        margin-left: 200px;
        margin-bottom: 10%;
    }

    #scrollButton { bottom: 7%; }

    .elemento-oculto { opacity: 1; }

}


@media screen and (max-width: 1250px) {
    
    #imagen-todo {
        margin-left: 200px;
    }

    #scrollButton { bottom: 10%; }

}

@media screen and (max-width: 1200px) {

    #imagen-todo {
        width: 300px;
        margin-left: 100px;
    }
   
    #scrollButton { bottom: 13%; }

}

@media screen and (max-width: 1170px) {

    #scrollButton { bottom: 16%; }

}

@media screen and (max-width: 1115px) {

    #scrollButton { bottom: 19%; }

}

@media screen and (max-width: 1075px) {

    #scrollButton { bottom: 22%; }

}

@media screen and (max-width: 1030px) {

    #scrollButton { bottom: 25%; }

}

@media screen and (max-width: 995px) {

    #scrollButton { bottom: 28%; }

}


@media screen and (max-width: 960px) {

    #imagen-todo {
        width: 250px;
        margin-bottom: 30%;
    }

    #scrollButton { bottom: 31%; }

  }

@media screen and (max-width: 925px) {

    #scrollButton { bottom: 32%; }

}

@media screen and (max-width: 913px) {

    #scrollButton { display: none; }

}


@media screen and (max-width: 850px) {

    #imagen-todo { display: none; }

    li.lista {
        width: 100%;
        padding-left: 10%;
        padding-right: 10%;
        margin-top: -30px;
    }

  }

@media screen and (max-width: 600px) {

    #back-video { top: 60px; }

    li.lista{
        margin-top: 10px;
    }

}

/* iPad Pro */
/* Estilos específicos para iPad Pro */
@media only screen 
  and (min-device-width: 1024px) 
  and (max-device-width: 1366px) 
  and (-webkit-min-device-pixel-ratio: 2) {
    
    #scrollButton { bottom: 60%; }

}