@charset "UTF-8";

/*==================================================
背景色が伸びて出現
===================================*/

/*全共通*/

.bgextend{
  animation-name:bgextendAnimeBase;
  animation-duration:1s;
  animation-fill-mode:forwards;
  position: relative;
  overflow: hidden;/*　はみ出た色要素を隠す　*/
  opacity:0;
}

@keyframes bgextendAnimeBase{
  from {
    opacity:0;
  }

  to {
    opacity:1;
}
}

/*中の要素*/
.bgappear{
  animation-name:bgextendAnimeSecond;
  animation-duration:1s;
  animation-delay: 0.6s;
  animation-fill-mode:forwards;
  opacity: 0;
}

@keyframes bgextendAnimeSecond{
  0% {
  opacity: 0;
  }
  100% {
  opacity: 1;
}
}

/*左から右*/
.bgLextend::before{
  animation-name:bgLextendAnime;
  animation-duration:1s;
  animation-fill-mode:forwards;
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: #000;/*伸びる背景色の設定*/
}
@keyframes bgLextendAnime{
  0% {
    transform-origin:left;
    transform:scaleX(0);
  }
  50% {
    transform-origin:left;
    transform:scaleX(1);
  }
  50.001% {
    transform-origin:right;
  }
  100% {
    transform-origin:right;
    transform:scaleX(0);
  }
}

/*右から左*/
.bgRextend::before{
  animation-name:bgRextendAnime;
  animation-duration:1.5s;
  animation-fill-mode:forwards;
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: #000;/*伸びる背景色の設定*/
  opacity: 0.7;
}
@keyframes bgRextendAnime{
  0% {
    transform-origin:right;
    transform:scaleX(0);
  }
  50% {
    transform-origin:right;
    transform:scaleX(1);
  }
  50.001% {
    transform-origin:left;
  }
  100% {
    transform-origin:left;
    transform:scaleX(0);
  }
}

/*上から下*/
.bgUDextend::before{
	animation-name:bgUDextendAnime;
	animation-duration:1s;
	animation-fill-mode:forwards;
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: #ff0000;/*伸びる背景色の設定*/
}
@keyframes bgUDextendAnime{
	0% {
		transform-origin:top;
		transform:scaleY(0);
	}
	50% {
		transform-origin:top;
		transform:scaleY(1);
	}
	50.001% {
		transform-origin:bottom;
	}
	100% {
		transform-origin:bottom;
		transform:scaleY(0);
	}
}

/*下から上*/
.bgDUextend::before{
	animation-name:bgDUextendAnime;
	animation-duration:1s;
	animation-fill-mode:forwards;
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: #666;/*伸びる背景色の設定*/
}
@keyframes bgDUextendAnime{
	0% {
		transform-origin:bottom;
		transform:scaleY(0);
	}
	50% {
		transform-origin:bottom;
		transform:scaleY(1);
	}
	50.001% {
		transform-origin:top;
	}
	100% {
		transform-origin:top;
		transform:scaleY(0);
	}
}


/* スクロールをしたら出現する要素にはじめに透過0を指定　*/
.bgappearTrigger,
.bgLextendTrigger,
.bgRextendTrigger,
.bgUDextendTrigger,
.bgDUextendTrigger{
    opacity: 0;
}