.frame_main {
    overflow: hidden;
}

.app, .card_wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    width: 100%;
    height: 100%;
}
.card {
    display: inline-block;
    position: absolute;
    width: 300px;
    height: 480px;
    margin: calc(-.5*480px) 0 0 calc(-1.5*300px);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    transition: all 0.8s ease-in-out;
}
.card.center {
    z-index: 50;
    transform: translateX(300px);
}
.card.left {
    z-index: 30;
    transform: translateX(0px) scale(0.7,0.7);
}
.card.right {
    z-index: 40;
    transform: translateX(600px) scale(0.7,0.7);
}
.card.center:before {
    content: "";
    z-index: 55;
    position: absolute;
    display: inline-block;
    width: 100%;
    height: 100%;
    top: 0; right: 0; bottom: 0; left: 0;
    background: rgba(0,0,0,0.1);
}
.card.right:before,
.card.left:before {
    content: "";
    z-index: 45;
    position: absolute;
    display: inline-block;
    width: 100%;
    height: 100%;
    top: 0; right: 0; bottom: 0; left: 0;
    background: rgba(0,0,0,0.4);
}

.btn {
    display: inline-block;
    position: absolute;
    width: calc((100vw - (1.2*300px))/2);
    height: calc(100vh - 100px);
    z-index: 50;
    top: calc(50px - 50vh);
    background-size: 50px;
    background-repeat: no-repeat;
    opacity: 0.4;
    cursor: pointer;
}
.btn-left {
    background-position: 70% center;
    left: -180px;
    transform: translateX(-100%);
}
.btn-right {
    background-position: 30% center;
    left: 180px;
}
.btn:hover {
    opacity:1;
}

.app_bg {
    overflow: hidden;
    position: absolute;
    width: 100%;
    height: calc( 100vh - 99px );
    z-index: -5;
    top:0;
    left:0;
    filter: blur(8px);
    pointer-events: none;
    user-select: none;
}
.app_bg:before {
    position: absolute;
    z-index: 1;
    content: "";
    width: 100%;
    height: 100%;
    top: 0; right: 0; bottom: 0; left: 0;
    background: rgba(0,0,0,0.7);
}
.app_bg_image {
    width: 100%;
    height: 100%;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: absolute;
    transition: all 0.8s linear;
}
.app_bg_image.center {
    opacity: 1;
}
.app_bg_image.left,
.app_bg_image.right {
    opacity: 0;
}

.info {
    position: absolute;
    width: 250px;
    left: -180px;
    z-index: 51;
}
.info.center {
    z-index: 55;
}
.info .text {
    opacity: 0;
    position: relative;
    top: -130px;
    font-size: 32px;
    white-space: nowrap;
    color: #fff;
}
.info .name,
.info .location {
    text-transform: uppercase;
}
.info .location {
    margin-left: 20px;
    margin-bottom: 20px;
    padding-bottom: 0.8rem;
    font-weight: 600;
    font-size: 30px;
}
.info .location::before {
    width: 15px;
    height: 5px;
    top: 18px;
    left: -25px;
    content: "";
    position: absolute;
    background: #fff;
}
.info .description {
    font-size: 20px;
    font-weight: 500;
}

/* RWD */
@media screen and (max-width: 520px) {
    .btn {
        display: none;
    }
    .app_bg {
        height: calc( 100vh - 49px);
    }
    .info {
        left: -135px;
    }
}