* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body, html {
  width: 100%;
  height: 100%;
}

/* スライダー全体 */
.fade-slider {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

/* 各スライド */
.fade-slider .slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  z-index: 0;
}

/* 画像調整 */
.fade-slider .slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 表示中スライド */
.fade-slider .slide.active {
  opacity: 1;
  z-index: 1;
}

/* PC用サイズ制限 */
@media (min-width: 768px) {
  .fade-slider {
    width: 800px;
    height: 500px;
    margin: 0 auto;
  }

  .fade-slider .slide,
  .fade-slider .slide img {
    width: 800px;
    height: 500px;
  }
}