.mva img,
.mvb img,
.mvc img {
    display: block;
    width: 100%;
}

#mv_bx {
  position: fixed;
  width: 100%;
  height: 100vh;
  height: calc(var(--vh, 1vh) * 100);
  top: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 100;
  overflow: auto;
  display: none;
}

#mv_bx .kbx {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
}
.vdbx {
    position: relative;
    width: 944px;
    padding-bottom: 531px;
    display: block;
    display: none;
    margin: 0 auto;
    -webkit-filter: drop-shadow(0 10px 15px rgba(0, 0, 0, 0.8));
    filter: drop-shadow(0 10px 15px rgba(0, 0, 0, 0.8));
}
.vdbx::after {
        position: absolute;
        content: "";
        width: 105%;
        height: 107%;
        display: block;
        pointer-events: none;
        background-attachment: scroll;
        background-repeat: no-repeat;
        background-position: 50% 50%;
        background-image: url(../images/vdo.png);
        background-size: 100% auto;
        top: 0;
        left: 0;
 }
.clos_2 {
    position: absolute;
    width: 30px;
    padding-bottom: 71px;
    display: block;
    cursor: pointer;
    background-attachment: scroll;
    background-repeat: no-repeat;
    background-image: url(../images/close_s.png);
    background-size: 100% auto;
    top: -2%;
    right: -1%;
    z-index: 2;
}
.vdbx > .v1 {
    position: absolute;
    width: 100%;
    padding-bottom: 53.4%;
    top: 0;
    left: 2.5%;
    margin-top: 2%;
    overflow: hidden;

}
.mvbtbox {
    position: absolute;
    z-index: 9;
    opacity: 0.5;
    top: 35%;
    width: 80px;
    height: auto;
    left: 50%;
    margin-left: -40px;
}

.mvx {
    position: relative;
    width: 100%;
}

.mva {
    position: absolute;
    width: 100%;
}

.mvb {
    position: absolute;
    width: 100%;
    -moz-animation: rotate 3.5s linear infinite;
    -webkit-animation: rotate 3.5s linear infinite;
    -o-animation: rotate 3.5s linear infinite;
    -ms-animation: rotate 3.5s linear infinite;
    animation: rotate 3.5s linear infinite;
}

.mvc {
    position: absolute;
    width: 100%;
    -moz-animation: rotater 10s linear infinite;
    -webkit-animation: rotater 10s linear infinite;
    -o-animation: rotater 10s linear infinite;
    -ms-animation: rotater 10s linear infinite;
    animation: rotater 10s linear infinite;
}

.clos_2:hover,
.mvbtbox:hover {
    transform: scale(0.98);
    transition: all 0.3s ease 0s;
    -moz-transition: all 0.3s ease 0s;
    -webkit-transition: all 0.3s ease 0s;
    filter: brightness(1.5);
    cursor: pointer;
}

/* anima */
@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@keyframes rotater {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(-360deg);
    }
}

@media only screen and (max-width: 800px) {
	.mvbtbox {
		top:43%;
	}
	
    .vdbx {
        width: 100%;
        padding-bottom: 58.4%;
    }
    .vdbx::after {
        width: 101%;
        height: 104%;
        left: -3px;
    }
    .clos_2 {
        top: 0%;
        right: 3%;
    }
    .vdbx > .v1 {
        width: 95.5%;
        margin-top: 3.5%;
        margin-left: -0.2%;
    }
	iframe {
		position: absolute;
		top: 0;
		left: 0;
		width: 100%;
		height: 100%;
		border: 0;		
    }
}