a, button{
  cursor: pointer;
}

.pb-56-25 {
  padding-bottom: 56.25%;
}

html.dark * {
  scrollbar-width: thin;           /* Firefox */
  scrollbar-color: #888 #222;      /* Firefox */
}
html.dark *::-webkit-scrollbar {
  width: 8px;
  background: #222;
}
html.dark *::-webkit-scrollbar-thumb {
  background: #888;
  border-radius: 4px;
}