body
{
    background-image: url("../imagenes/prueba2.png");
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size:cover;
    background-color: black;
}

.reveal{
  position: relative;
  transform: translateY(50px);
  opacity: 0;
  transition: 1s all ease;
}

.reveal.active{
  transform: translateY(0);
  opacity: 1;
}

.foto_estilo
{
   display: block;
   margin: auto;
}

.blanca
{
    color: white;
}

.presentacion
{
    margin-top: 3%;
}

a.navbar-brand
{
    margin-left: 18%;
}

b.blanca:hover
{
    color: #007bff;
}

div#carouselExampleControls
{
    opacity: 0.5;
}

button#enviar
{
    width: 100%;
    margin-bottom: 8%;
}

button#enviar:hover
{
    background-color: darkturquoise;
}

#myBtn {
    display: none;
    position: fixed;
    bottom: 10px;
    right: 10px;
    z-index: 99;
    font-size: 18px;
    border: none;
    outline: none;
    background-color: #007bff;
    color: white;
    cursor: pointer;
    padding: 15px;
    border-radius: 50px;
  }
  
  #myBtn:hover {
    background-color: darkturquoise;
  }

  .flip-card {
    background-color: transparent;
    width: 100%;
    height: 300px;
    perspective: 1000px;
  }
  
  .flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.6s;
    transform-style: preserve-3d;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
  }
  
  .flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
  }
  
  .flip-card-front, .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
  }
  
  .flip-card-front {
    background-color: #bbb;
    
  }
  
  .flip-card-back {
    /*background-color: #2980b9;*/
    color: white;
    transform: rotateY(180deg);
  }

@media only screen and (max-width: 1200px)
{
    a.navbar-brand
    {
      margin-left: 14%;
    }
}

@media only screen and (max-width: 1100px)
{
    a.navbar-brand
    {
      margin-left: 10%;
    } 
}

@media only screen and (max-width: 991px)
{
    .presentacion
    {
        margin-top: 8%;
    }

    a.navbar-brand
    {
      margin-left: 0%;
    } 

    a.nav-link
    {
       margin-left: -2%;
       margin-right: -2%; 
    }

    a.nav-link:hover
    {
       background-color: #494646;
    }

    b.blanca
    {
        margin-left: 2%;
    }

    /*button#enviar{
        width: 25% !important;
    }*/
}

@media only screen and (max-width: 767px)
{
    div#appsweb{
        margin-top: 8% !important;
    }
}

@media only screen and (max-width: 700px)
{
    .presentacion
    {
        margin-top: 12%;
    }
}

@media only screen and (max-width: 500px)
{
    .presentacion
    {
        margin-top: 14%;
    }
}