html,body{
height: 100%;
}

.bg-white{
background-color: #fff !important;
}

.text-white{
color: #fff !important;
}

#particles-js{
position:fixed;/*描画固定*/
z-index:-1;/*描画を一番下に*/
width: 100%;
height: 100%;
background-color:#FFF;/*背景色*/
}

#wrapper_bg01{
	position: relative;
	z-index: 1;
	width:100%;
	height: 100%;
}

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

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

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

/* video */
.video{
  width: 100%;
  height: 100vh;
  background: url(../img/kv-alternative.jpg) no-repeat center/cover;
  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%;
  width: auto;
  height: auto;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateX(-50%) translateY(-50%);
}

@media screen and (min-width: 768px) {
  /* kv */
  .kv{
    min-width: 960px;
  }

  .kv .main-copy{
    font-size: 60px;
  }

  .kv .sub-copy{
    font-size: 30px;
  }

  /* video */
  .video{
    min-width: 960px;
  }
}