body {
    text-align: center;
    font-family: sans-serif;
    background: #111;
    color: white;
  }

#clickableArea {
  position: relative;
  width: 70%;
  margin: 20px auto;
  display: flex;
  justify-content: center;
  align-items: center;
}

#clickableArea:fullscreen {
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  #clickableArea:fullscreen #comicPage {
    border: none;
  }

#comicPage {
    max-width: 100%;
    max-height: 100vh;
    width: auto;
    height: auto;
    display: block;
    z-index: 1;
    border: 4px solid #444;
    margin: auto;
  }
  
#leftZone,
#rightZone {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 2; /* AU-DESSUS de l’image */
  cursor: pointer;
}

#leftZone {
    width: 20%;
    left: 0;
  }
  
  #rightZone {
    width: 50%;
    right: 0;
  }
  
#fullscreenToggle {
    position: absolute;
    right: 0;
    top: 0;
    z-index: 10;
    }

/* TEST the buttons
#leftZone {
    background-color: rgba(255, 0, 0, 0.25);
  }
  #rightZone {
    background-color: rgba(0, 255, 0, 0.25);
 }*/