html,
body {
  background-color: #fff;
  font-family: "Helvetica", "Arial", "Verdana", sans-serif;
  margin: 0;
  padding: 0;
}

.app-container {
  max-width: 100%;
  overflow: hidden;
}

.header {
  background-color: #369;
  padding: 10px 0;
}

.header > h1 {
  color: #fff;
  font-size: 24px;
  font-weight: 400;
  margin: 0;
  text-align: center;
}

.container {
  margin: 0 auto;
  padding: 20px 0;
  text-align: center;
  user-select: none;
  width: 352px;
}

.row {
  display: flex;
  gap: 12px;
  padding-bottom: 10px;
  padding-top: 10px;
}

.add-button,
.dice > div {
  border-radius: 6px;
  border: 2px solid #0003;
  color: #fff;
  height: 58px;
  line-height: 58px;
  min-height: 58px;
  min-width: 58px;
  width: 58px;
}

.add-button {
  cursor: pointer;
  font-size: 32px;
}

.yellow .add-button,
.yellow .dice > div {
  background: #fc0;
}

.yellow .add-button:hover,
.yellow .dice > div > div:hover {
  background: #fd1;
}

.yellow .add-button:active,
.yellow .dice > div > div:active {
  background: #eb0;
}

.blue .add-button,
.blue .dice > div {
  background: #369;
}

.blue .add-button:hover,
.blue .dice > div > div:hover {
  background: #47a;
}

.blue .add-button:active,
.blue .dice > div > div:active {
  background: #258;
}

.pink .add-button,
.pink .dice > div {
  background: #f99;
}

.pink .add-button:hover,
.pink .dice > div > div:hover {
  background: #faa;
}

.pink .add-button:active,
.pink .dice > div > div:active {
  background: #e88;
}

.black .add-button,
.black .dice > div {
  background: #333;
}

.black .add-button:hover,
.black .dice > div > div:hover {
  background: #444;
}

.black .add-button:active,
.black .dice > div > div:active {
  background: #222;
}

.dice {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.dice > div {
  font-size: 32px;
  position: relative;
  transition-duration: 300ms;
  transition-property: all;
}

.dice > div.removing {
  border-left-width: 0;
  border-right-width: 0;
  margin-right: -10px;
  min-width: 0;
  width: 0;
}

.dice > div.removing > * {
  opacity: 0;
}

.dice > div > div {
  background: inherit;
  border-radius: 4px;
  border: 2px solid #0003;
  cursor: pointer;
  font-size: 13px;
  height: 15px;
  line-height: 15px;
  position: absolute;
  right: -5px;
  width: 15px;
}

.dice > div > div.hidden {
  display: none;
}

.dice > div > div.increase {
  top: -3px;
}

.dice > div > div.remove {
  height: 14px;
  line-height: 14px;
  right: -4px;
  top: 20px;
  width: 13px;
}

.dice > div > div.decrease {
  bottom: -3px;
}