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

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: black;
  font-family: Arial, sans-serif;
}

.viewer {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.slider {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.35s ease;
}

.page {
  min-width: 100vw;
  height: 100vh;
  object-fit: contain;
  background: black;
}

.arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 60px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  color: white;
  font-size: 30px;
  z-index: 999;
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.left {
  left: 15px;
}

.right {
  right: 15px;
}

.arrow:active {
  transform: translateY(-50%) scale(0.95);
}

@media (max-width: 768px) {

  .arrow {
    width: 50px;
    height: 50px;
    font-size: 24px;
  }
}