* {
        margin: 0;
        padding: 0;
        -webkit-box-sizing: border-box;
        -moz-box-sizing: border-box;
        box-sizing: border-box;

    }

    body {
        background: #FFF1E8;

    }

    section {
        position: center;
        z-index: -1000;

    }

    .wrap {
        width: 350px;
        margin: 10px auto;
        /*display: -webkit-box;*/
        /*display: -webkit-flex;*/
        /*display: -ms-flexbox;*/
        /*display: flex;*/
        -webkit-justify-content: center;
        -ms-flex-pack: center;
        justify-content: center;
        z-index: -1000;

    }

    .tarjeta-wrap {
        margin: 10px;
        -webkit-perspective: 800;
        perspective: 800;
        z-index: -1000;

    }

    .tarjeta {
        width: 300px;
        height: 350px;
        background: #F9A6A0;
        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);
        box-shadow: 0px 10px 15px -5px rgba(0, 0, 0, 0.65);
        z-index: -1000;
    }

    .adelante, .atras {
        width: 100%;
        height: 100%;
        position: fixed;
        top: 0;
        left: 0;
        -webkit-backface-visibility: hidden;
        backface-visibility: hidden;
        z-index: -1000;

    }

    .adelante {
        width: 100%;
        z-index: -1000;

    }

    .atras {
        -webkit-transform: rotateY(180deg);
        transform: rotateY(180deg);
        z-index: -1000;

        padding: 15px;
        display: -webkit-box;
        display: -webkit-flex;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-pack: center;
        -webkit-justify-content: center;
        -ms-flex-pack: center;
        justify-content: center;
        -webkit-box-align: center;
        -webkit-align-items: center;
        -ms-flex-align: center;
        align-items: center;

        text-align: center;
        color: #fff;
        font-family: "open sans";
        background: #F9A6A0;
    }

    .tarjeta-wrap:hover .tarjeta {
        -webkit-transform: rotateY(180deg);
        transform: rotateY(180deg);
        z-index: -1000;

    }

    .card1 {
        background-image: url(../images/pusheen-beautiful.png);
        background-size: 240px;
        background-repeat: no-repeat;
        background-position: center;
        background-color: rgb(210, 234, 236);
        z-index: -1000;


    }

    .card2 {
        background-image: url(../images/pusheen-love.png);
        background-size: 280px;
        background-repeat: no-repeat;
        background-position: center;
        background-color: rgb(210, 234, 236);
        z-index: -1000;


    }