video {
    position: fixed;
    right: 0;
    bottom: 0;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: 0;
}

.mask {
    position: fixed;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    background: rgba(0, 0, 0, 0.4)
}

.hover-container {
    position: absolute;
    top: 10%;
    width: 80%;
    text-align: center;
    right: 10%;
}

.logo {
    width: 140px;
}

.title {
    width: 68%;
    margin: 10% auto 0;
    font-size: 60px;
}

.child-title {
    width: 68%;
    margin: 0 auto;
    font-weight: 100;
    font-size: 14px;
}

.desc {
    font-size: 21px;
    font-weight: 100;
    width: 80%;
    margin: 3% auto 10%;
}

.btn-enter {
    width: 230px;
    margin: 0 auto;
    border: 1px solid;
    border-radius: 36px;
    padding: 8px;
    font-size: 20px;
    cursor: pointer;
}

.btn-enter:hover {
    background: rgba(255, 255, 255, 0.4);
    color: #fff;
}

.enter p {
    font-size: 18px;
    font-weight: 100;
}

.bottom {
    margin-top: 1%;
}

.bottom p {
    font-weight: 100;
    font-size: 13px;
    margin: 0px;
}

@media(max-width:738px) {
    video {
        left: -100%;
    }
    .hover-container {
        width: 90%;
        right: 5%;
    }
    .title {
        width: 87%;
        margin: 15% auto 5px;
        font-size: 28px;
    }
    .child-title {
        width: 86%;
        font-size: 12px;
    }
    .desc {
        font-size: 17px;
        font-weight: 300;
        width: 83%;
        margin: 0 auto;
    }
    .desc-body {
        margin: 15% auto 18%;
    }
    .desc-bottom {
        width: 50%;
        font-size: 17px;
        font-weight: 300;
        margin: 5px auto;
    }
    .btn-enter {
        width: 226px;
        padding: 6px;
        font-size: 18px;
    }
    .btn-enter:hover {
        background: rgba(255, 255, 255, 0.4);
        color: #fff;
    }
    .enter p {
        font-size: 18px;
        font-weight: 100;
    }
    .bottom {
        margin-top: 20%;
    }
    .bottom p {
        font-size: 11px;
    }
    #gif_bg {
        width: 100vw;
        height: 100vh;
    }
    #gif_bg img {
        height: 100%;
        width: 110%;
    }
}