#app {
  position: relative;
  overflow: hidden;
  margin: 0 auto;
  min-width: 1000px;
  height: 160px;
}

.layer {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

img {
  user-select: none;
  pointer-events: none;
}

#selectBox {
  display: flex;
  flex-wrap: wrap;
  gap: 1em;
  padding: 1em;
  margin: 0 auto;
  justify-content: flex-start;
}

#selectBox > button {
  flex: 0 0 auto;
  padding: 0.6em 1em;
  border: 1px solid #e5e9ef;
  border-radius: 6px;
  background-color: #f4f5f7;
  color: #222222;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.3s, color 0.3s, transform 0.2s;
  font-size: 16px;
  box-sizing: border-box;
}

#selectBox > button:hover {
  background-color: #e5e9ef;
  transform: translateY(-2px);
}