* {
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
body { background-color:#fafafa; font-family:'Open Sans';}
.container { margin:150px auto; max-width:380px;}
div { display: block; }

.stepper {
  position: relative;
  width: 100%;
  height: 30px;
  background: #4e4e4e;
  border: 1px solid #292929;
  cursor: col-resize;
}

.stepper .stepper-number:focus { outline: 1px solid #1baee1;  //cursor: text
}

.stepper-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: rgba(255, 255, 255, 0.2);
  -webkit-transform-origin: 0 0;
  -ms-transform-origin: 0 0;
  transform-origin: 0 0;
  -webkit-transition: background-color 0.1s linear;
  transition: background-color 0.1s linear;
}

.stepper-number {
  position: relative;
  width: 100%;
  height: 28px;
  line-height: 28px;
  padding: 0 6px;
  color: #fff;
  background: transparent;
  border: 0;
  outline: 0;
  outline-offset: 0;
  cursor: col-resize;
  z-index: 2;
}

.stepper.is-changing .stepper-progress { background-color: #1baee1; }

.stepper.is-scrubbing { background: rgba(255, 255, 255, 0.8) }