header {
    width: 100%;
    height: auto;
    position: relative;
    overflow: hidden;
}

video {
    width: 100%;
}

.wrap {
    /*width: --1100px;
        margin: 50px auto;*/
    display: flex;
    justify-content: center !important;
    align-items: center!important;
}

.tarjeta-wrap {
    margin: 0px;
    -webkit-perspective: 800;
    perspective: 800;
}

.tarjeta {
    width: 270px;
    height: 350px;
    background-color: rgb(17, 4, 61);
    position: relative;
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    -webkit-transition: .7s ease;
    transition: .7s ease;
    -webkit-box-shadow: 0px 10px 15px -5px rgba(0, 0, 0, 0.65);
    -moz-box-shadow: 0px 10px 15px -5px rgba(0, 0, 0, 0.65);
    box-shadow: 0px 10px 15px -5px rgba(0, 0, 0, 0.65);
}

.adelante,
.atras {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    backface-visibility: hidden;
}

.adelante {
    width: 100%;
}

.atras {
    transform: rotateY(180deg);
    padding: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
    /*font-family: "open sans";*/
}

.tarjeta-wrap:hover .tarjeta {
    transform: rotateY(180deg);
}

.card4 {
    background-image: url(imagenes/mn.png);
    background-size: cover;
    align-items: center;
    text-align: center;
}

.card2 {
    background-image: url(imagenes/t_acuacultura.png);
    background-size: cover;
}

.card3 {
    background-image: url(imagenes/t_ra.png);
    background-size: cover;
}

.card1 {
    background-image: url(imagenes/t_buzo.png);
    background-size: cover;
}

.card5 {
    background-image: url(imagenes/t_sig2.png);
    background-size: cover;
}

.card6 {
    background-image: url(imagenes/t_pesca.png);
    background-size: cover;
}

.card7 {
    background-image: url(imagenes/t_refri.png);
    background-size: cover;
}

.card8 {
    background-image: url(imagenes/t_reacrea.png);
    background-size: cover;
}

.card9 {
    background-image: url(imagenes/t_refri.png);
    background-size: cover;
}

.card10 {
    background-image: url(imagenes/t_sig2.png);
    background-size: cover;
}