header:hover {
  color: #2196f3;
  cursor: pointer;
}
.dark-mode a,
a,
header {
  transition:
    background-color 0.3s,
    color 0.3s,
    transform 0.3s;
}
.dark-mode a:hover,
a:hover {
  color: #f3de21;
  cursor: pointer;
}
.removelinkdefault {
  color: #000;
  text-decoration: none;
}