.flapper {
  display: flex;
  align-items: center;
  gap: 2px;
  min-height: 42px;
}
.flapper .digit {
  position: relative;
  width: 30px;
  height: 42px;
  display: inline-block;
  perspective: 120px;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04), 0 1px 2px rgba(0,0,0,0.35);
}
.flapper .digit::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: rgba(255,255,255,0.08);
  transform: translateY(-0.5px);
  z-index: 5;
}
.flapper .digit .top,
.flapper .digit .bottom {
  position: absolute;
  left: 0;
  width: 100%;
  height: 50%;
  overflow: hidden;
  background: linear-gradient(180deg, #202939 0%, #141c29 100%);
  color: #f2f6ff;
  text-align: center;
  font-family: "Roboto Condensed", Arial, sans-serif;
  font-weight: 700;
  font-size: 34px;
  line-height: 42px;
  text-transform: uppercase;
  text-shadow: 0 0 10px rgba(180,210,255,0.15);
}
.flapper .digit .top {
  top: 0;
  border-top-left-radius: 4px;
  border-top-right-radius: 4px;
}
.flapper .digit .bottom {
  bottom: 0;
  line-height: 0;
  border-bottom-left-radius: 4px;
  border-bottom-right-radius: 4px;
}
.flapper .digit .top::before,
.flapper .digit .bottom::before {
  content: attr(data-char);
}
.flapper .digit .front,
.flapper .digit .back {
  backface-visibility: hidden;
  transform-origin: center bottom;
}
.flapper .digit .bottom.front,
.flapper .digit .bottom.back {
  transform-origin: center top;
}
.flapper .digit .front.top,
.flapper .digit .back.top,
.flapper .digit .front.bottom,
.flapper .digit .back.bottom {
  display: block;
}
.flapper .digit .bottom {
  line-height: 0;
}
.flapper .digit .top { line-height: 40px; }
.flapper .digit .bottom { line-height: 0; }
.flapper .digit .bottom > *,
.flapper .digit .top > * { pointer-events: none; }
.flapper .digit .top,
.flapper .digit .bottom {
  display: flex;
  align-items: center;
  justify-content: center;
}
.flapper .digit .bottom {
  align-items: flex-start;
}
.flapper .digit .top {
  align-items: flex-end;
}