.border-lable-flt {
    display: block;
    position: relative;
}

.border-lable-flt label,
.border-lable-flt > span {
    position: absolute;
    left: 0;
    top: 0;
    cursor: text;
    font-size: 75%;
    opacity: 1;
    -webkit-transition: all 0.2s;
    transition: all 0.2s;
    top: -0.5em;
    left: 0.75rem;
    z-index: 3;
    line-height: 1;
    padding: 0 1px;
}

    .border-lable-flt label::after,
    .border-lable-flt > span::after {
        content: " ";
        display: block;
        position: absolute;
        background: white;
        height: 2px;
        top: 50%;
        left: -0.2em;
        right: -0.2em;
        z-index: -1;
    }

.border-lable-flt .form-control::-webkit-input-placeholder {
    opacity: 1;
    -webkit-transition: all 0.2s;
    transition: all 0.2s;
}

.border-lable-flt
.form-control:placeholder-shown:not(:focus)::-webkit-input-placeholder {
    opacity: 0;
}

.border-lable-flt .form-control:placeholder-shown:not(:focus) + * {
    font-size: 150%;
    opacity: 0.5;
    top: 0.3em;
}

.input-group .border-lable-flt {
    display: table-cell;
}

    .input-group .border-lable-flt .form-control {
        border-radius: 0.25rem;
    }

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

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

.form-control:focus {
    color: #804000;
    background-color: #fff;
    border-color: #006633;
    box-shadow: 0 0 0 0.2rem rgba(0, 102, 51, 0.25);
}

</style >