.page-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  font-size: 2rem;
  font-weight: bold;
  color: white;
  background: rgba(0,0,0,0.4);
  padding: 0.5em 1em;
  border-radius: 50%;
  text-decoration: none;
  z-index: 1000;
  transition: background 0.3s;
}

.page-nav:hover {
  background: rgba(0,0,0,0.7);
}

.page-nav-left {
  left: 20px;
}

.page-nav-right {
  right: 20px;
}

p {
}

@media (max-width: 768px) {
  .page-nav {
    width: 2.8rem;
    height: 2.5rem;
    font-size: 1rem;
  }
}

@media (max-width: 768px) {
  .page-nav-left {
    left: 10px;
  }
}

@media (max-width: 768px) {
  .page-nav-right {
    right: 10px;
  }
}