:root {
  --submit-color: #000; /* default fallback */
}

#submit-button-id {
  background-color: var(--submit);
}

#transition-div-id {
  max-width: 100%;
  max-height: 600px;
  position: relative;
  bottom: -25px;
  box-shadow: 2px 2px 5px #000000d9;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
}