.ic {
  --background: hsl(0, 0%, 100%);
  --knob-size: 4rem;
  display: inline-block;
  height: calc(var(--knob-size) * 1.1);
  position: relative;
}

.ic-wrapper {
  display: flex;
  width: auto;
}

.ic-start,
.ic-end,
.ic-step {
  align-items: center;
  display: flex;
  flex-direction: column;
  height: 5rem;
  position: relative;
  width: 1rem;
}

.ic-body {
  background-color: #434343;
  border-width: .25rem 0;
  border-style: solid;
  border-color: #636363 transparent #232323;
  flex: 1;
  width: 100%;
}

.ic-start .ic-body {
  border-width: .25rem 0 .25rem .15rem;
  border-color: #636363 transparent #232323 #636363;
}

.ic-start .ic-body::before {
  background: #333;
  border-radius: 0 .6rem .6rem 0;
  box-shadow:
    -1px 1px 0 0 #232323 inset,
    -1px -1px 0 0 #636363 inset;
  content: '';
  display: block;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 1.2rem;
  width: .6rem;
}

.ic-end .ic-body {
  border-width: .25rem .15rem .25rem 0;
  border-color: #636363 #232323 #232323 transparent;
}

.pin {
  background: gold;
  height: .65rem;
  width: .25rem;
  position: relative;
}

.pin::before {
  background: inherit;
  content: '';
  display: block;
  width: .5rem;
  height: .4rem;
  left: -.125rem;
  position: absolute;
}

.pin-bottom::before {
  top: -.1rem;
}

.pin-top::before {
  bottom: -.1rem;
}

.label {
  color: lightgray;
  font-family: monospace;
  font-size: .8rem;
  left: 1rem;
  position: absolute;
  top: 1.2rem;
}

.value {
  background-color: transparent;
  border: none;
  color: hsl(0, 0%, 90%);
  font-weight: 600;
  font-family: monospace;
  font-size: 1rem;
  left: 1rem;
  padding: .25rem;
  position: absolute;
  top: 2.2rem;
  transition: all .3s ease;
  width: auto;
}

.value:focus {
  background-color: white;
  border: 1px solid gray;
  border-radius: .25rem;
  color: hsl(0, 0%, 30%);
}