.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: 1.2rem;
    z-index: 3;
    line-height: 1;
    padding: 0 1px;
    color: #4aa760; 
}

.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: 90%;
    opacity: 1;
    top: 1.3rem;
    pointer-events: none;
    color: #c9c9c9;
    font-weight: 300;
}

.has-float-label .form-control:placeholder-shown:not(:focus) + *::after {
    display: none;
}

.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: 0.25rem;
}
.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;
}
