.form-control-s {
    height: calc(1.5em + 0.75rem + 2px);
    /*padding: 0.375rem 0.75rem;*/
    padding: 4px;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #ced4da;
    border-radius: 0.25rem;
    transition: border-color .15s ease-in-out,box-shadow .15s ease-in-out;
}