:root {
  --feedback-margin: 1em;
  --feedback-container-height: 6em;
  --fade-distance: 2em;
}

#feedback_container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;

  margin: var(--feedback-margin);
  min-height: var(--feedback-container-height);
  height: 16em;
  width: calc(100vw - 2 * var(--feedback-margin));
}

#button_container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.msg_box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1em;

  position: absolute;
  min-height: fit-content;
  padding: var(--feedback-margin);
  width: 100%;

  color: rgba(214, 226, 211);
  background-color: #181d17;
  opacity: 0;

  transition-property: transform, opacity;
  transition-timing-function: ease-out;

  transform: translateY(calc(-1 * var(--fade-distance)));
}

.fadein {
  opacity: 1;

  transform: initial;
  transition-duration: 0.5s;
}

.fadein-delay {
  transition-delay: calc(var(--slide-delay) * var(--game-num-cols));
}

.fadeout {
  opacity: 0;

  transform: translateY(var(--fade-distance));
  transition-duration: 0.2s;
  transition-delay: 0s;
}