@charset "utf-8";

/*========= レイアウトのためのCSS ===============*/

p{
  margin:20px 10px;
}


/*==================================================
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: 1;
}

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

/*左から右*/
.bgLRextend::before{
  animation-name:bgLRextendAnime;
  animation-duration:1s;
  animation-fill-mode:forwards;
    content: "";
    position: absolute;
    width: 100%;
    height: 50%;
    background-color: #d3d3d3;/*伸びる背景色の設定*/
}
@keyframes bgLRextendAnime{
  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);
  }
}

/* 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,
.bgLRextendTrigger{
    opacity: 0;
}