#key-input-wrap {
  width: 200px;
  margin: 20px auto;
  text-align: center;

  background: transparent;
  box-shadow: none;
}

.inp {
  position: relative;
  margin: auto;
  width: 100%;
  max-width: 280px;
  border-radius: 3px;
  overflow: hidden;
}

.inp .label {
  position: absolute;
  top: 2px;
  left: 12px;
  font-size: 14px;
  color: rgba(0, 0, 0, 0.5);
  font-weight: 500;
  transform-origin: 0 0;
  transform: translate3d(0, 0, 0);
  transition: all 0.2s ease;
  pointer-events: none;
}

.inp .focus-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  box-shadow: none;
  z-index: -1;
  transform: scaleX(0);
  transform-origin: left;
}

.inp input {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  border: 0;
  font-family: inherit;
  padding: 8px 10px 0 10px;
  height: 36px;
  font-size: 14px;
  font-weight: 400;
  background: rgba(0, 0, 0, 0.02);
  box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.3);
  color: #000000;
  transition: all 0.15s ease;
}

.inp input:hover {
  background: rgba(0, 0, 0, 0.04);
  box-shadow: inset 0 -1px 0 rgba(0, 0, 0, 0.5);
}

.inp input:not(:placeholder-shown) + .label {
  color: rgba(0, 0, 0, 0.5);
  transform: translate3d(0, -12px, 0) scale(0.75);
}

.inp input:focus {
  background: rgba(0, 0, 0, 0.05);
  outline: none;
  box-shadow: inset 0 -2px 0 #0077FF;
}

.inp input:focus + .label {
  color: #0077FF;
  transform: translate3d(0, -12px, 0) scale(0.75);
}

.inp input:focus + .label + .focus-bg {
  transform: scaleX(1);
  transition: all 0.1s ease;
}