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

html,
body {
    width: 100%;
}

img {
    display: block;
    width: 100%;
}

.block-wrapper {
    width: 100%;
    height: 100%;
    position: relative;
}

.app {
    position: relative;
    display: block;
    width: 100%;
    height: 100vh;
    background-image: url(../image/bg.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    overflow: hidden;
}

.logo {
    position: absolute;
    width: 99%;
    left: 0%;
    bottom: 0%;
    transition: all ease .3s;
    transform-origin: 50% 100%;
}

.logo:hover {
    width: 100%;
    transform: scale(1)
}

.notice {
    position: absolute;
    width: 60%;
    top: 11%;
    left: 20%;
}

.wrapper {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    width: 70%;
    position: absolute;
    left: 15%;
    top: 26%;
}

.wrapper .card {
    position: relative;
    -ms-flex-preferred-size: 23%;
    flex-basis: 23%;
    cursor: pointer;
    -webkit-transform-style: flat;
    transform-style: flat;
    -webkit-perspective: 500px;
    perspective: 500px;
    -webkit-transition: all ease .3s;
    transition: all ease .3s;
}

.wrapper .card .perspective {
    -webkit-transition: all ease .1s;
    transition: all ease .1s;
    position: relative;
}

.wrapper .card .perspective .card-a {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    -webkit-transition: all ease 0.5s;
    transition: all ease 0.5s;
}

.wrapper .card .perspective .card-n {
    position: absolute;
    bottom: -3%;
    width: 80%;
    left: 10%;
}

.wrapper .card:hover {
    -webkit-transform: scale(1.1);
    transform: scale(1.1);
}

.wrapper .card:hover .card-a {
    opacity: 1;
}