/* Reset */
html, body, div, section, article, header, footer, main, nav, aside, p, h1, h2, h3, h4, h5, h6, img, canvas {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  background: #000;
  overflow: hidden;
}

.container {
  width: 100vw;
  height: 100vh;
  perspective: 1200px; /* simulate camera depth */
  overflow: hidden;
}

.scene {
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.2s ease-out;
  position: relative;
}

.container {
  width: 100vw;
  height: 100vh;
  perspective: 1200px;
  overflow: hidden;
  position: relative;
}

.background-layer {
  position: absolute;
  z-index: 1;
  width: 100%;
  height: 100%;
  background: url('aboutsozai/backgr.png') no-repeat center center;
}

.scene {
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.2s ease-out;
  position: relative;
  z-index: 2;
}

.books-layer {
  position: absolute;
  width: 100%;
  height: 100%;
  background: url('aboutsozai/books.png') no-repeat center center;
  background-size: cover;
  transform: translateZ(20px) scale(1.1);
}