body {
  text-align:  ;
  padding:  ;
}

.knob-wrapper {
  display: inline-block;
  position: relative;
  width: 110px;
  height: 120px;
  border: 2px solid;
  border-radius: 8px;
  text-align: center;
}
.knob-wrapper .knob {
  display: block;
  position: relative;
  width: 50px;
  height: 50px;
  margin: 5px auto;
  border: 2px solid transparent;
  border-radius: 100%;
  transform: rotate(-150deg);
}
.knob-wrapper .knob:after {
  position: absolute;
  content: "";
  width: 0;
  height: 30px;
  left: calc(50% - 1px);
  top: -5px;
  border-left: 2px solid;
}
.knob-wrapper svg.knob-input {
  position: absolute;
  width: 100px;
  height: 100px;
  left: 0;
  top: 0;
}
.knob-wrapper svg.knob-input circle {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  transform: rotate(120deg);
  transform-origin: 50% 50%;
}
.knob-wrapper .val {
  position: relative;
}