a:hover {
  filter: brightness(125%);
  border-bottom: 1px solid var(--c-accent);
}
a:active {
  opacity: 50%;
}

#end-button:hover,
#start-button:hover {
  transform: translateY(-3px);
  filter: brightness(125%);
}
#end-button:active,
#start-button:active {
  transform: translateY(0px);
  opacity: 0.5;
}

#game-target:hover {
  filter: brightness(150%);
}