.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:placeholder-shown:not(:focus)::-webkit-input-placeholder {
    opacity: 0;
    display: none;
}
.has-float-label .form-control:placeholder-shown:not(:focus)+* {
    font-size: 100%;
    opacity: .3;
    top: .7em;
}
.input-group .has-float-label {
    display: table-cell;
}
.input-group .has-float-label .form-control {
    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;
}

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

.has-float-label .form-control.form-control-sm:placeholder-shown:not(:focus) + * {
    font-size: 95%;
    opacity: .3;
    top: .5em;
}