.has-float-label {
  display: block;
  position: relative
}

  .has-float-label label/*, .has-float-label > span*/ {
    position: absolute;
    cursor: text;
    font-size: 75%;
    opacity: 1;
    -webkit-transition: all .2s;
    transition: all .2s;
    top: -.5em;
    left: .75rem;
    z-index: 3;
    line-height: 1;
    padding: 0 1px
  }

    .has-float-label label::after/*, .has-float-label > span::after*/ {
      content: " ";
      display: block;
      position: absolute;
      background: #fff;
      height: 2px;
      top: 50%;
      left: -.2em;
      right: -.2em;
      z-index: -1
    }

  .has-float-label .form-control::-webkit-input-placeholder {
    opacity: 1;
    -webkit-transition: all .2s;
    transition: all .2s
  }

  .has-float-label .form-control::-moz-placeholder {
    opacity: 1;
    transition: all .2s
  }

  .has-float-label .form-control:-ms-input-placeholder {
    opacity: 1;
    transition: all .2s
  }

  .has-float-label .form-control::placeholder {
    opacity: 1;
    -webkit-transition: all .2s;
    transition: all .2s
  }

  .has-float-label .form-control:placeholder-shown:not(:focus)::-webkit-input-placeholder {
    opacity: 0
  }

  .has-float-label .form-control:placeholder-shown:not(:focus)::-moz-placeholder {
    opacity: 0
  }

  .has-float-label .form-control:placeholder-shown:not(:focus):-ms-input-placeholder {
    opacity: 0
  }

  .has-float-label .form-control:placeholder-shown:not(:focus)::placeholder {
    opacity: 0
  }

  .has-float-label .form-control:placeholder-shown:not(:focus) + * {
    font-size: 150%;
    opacity: .5;
    top: .3em
  }

.input-group .has-float-label {
  -webkit-box-flex: 1;
  -webkit-flex-grow: 1;
  -ms-flex-positive: 1;
  flex-grow: 1;
  margin-bottom: 0;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -webkit-flex-direction: column;
  -ms-flex-direction: column;
  flex-direction: column;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center
}

  .input-group .has-float-label .form-control {
    width: 100%;
    border-radius: .25rem
  }

  .input-group .has-float-label:not(:last-child), .input-group .has-float-label:not(:last-child) .form-control {
    border-bottom-right-radius: 0;
    border-top-right-radius: 0;
    border-right: 0
  }

  .input-group .has-float-label:not(:first-child), .input-group .has-float-label:not(:first-child) .form-control {
    border-bottom-left-radius: 0;
    border-top-left-radius: 0
  }