webtools/site/hex-color/style.css

.hidden {
  display: none;
}

#colorTable {
  margin-top: 2rem;
}

#colorTable button {
  margin: 0;
  margin-right: 0.5rem;
}

#colorTable td {
  vertical-align: middle;
}

#showHiddenBtn {
  margin-top: 1rem;
}