#top-firstView {
  width: 100wh;
  height: 100vh;
  display: flex;
}
#top-firstView .message{
  color:#fff;
  font-weight: 300;
}

/* copy-body */
.copy-body{
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.copy-body .main-copy{
  color: #fff;
  font-size: 30px;
  font-weight: bold;
  text-align: center;
  line-height: 1;
  letter-spacing: .2em;
}

.copy-body .sub-copy{
  color: #fff;
  font-size: 20px;
  text-align: center;
}

/* video */
.video{
  width: 100%;
  height: 100vh;
  position: absolute;
  top: 0;
  left: 0;
  overflow: hidden;
  z-index: -1;
}

.video::after{
  content: '';
  width: 100%;
  height: 100%;
  background-color: #10394b;
  display: block;
  position: absolute;
  left: 0;
  top: 0;
  opacity: .3;
}

.video video{
  min-width: 100%;
  min-height: 100%;
  max-width: inherit;
  width: auto;
  height: auto;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateX(-50%) translateY(-50%);
}
@media (max-width:960px) {
  .video{
    z-index:-1;
    position: fixed;
  }

}