.FunctionForm__control {
    display: block;
    width: 100%;
    height: calc(1.5em + .75rem + 2px);
    padding: .375rem .75rem;
    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: .25rem;
}
.FunctionForm__label {
    display: inline-block;
    margin-bottom: .5em;
    font-size: 16px;
}
.FunctionForm__submit, .FunctionForm__result {
    margin-top: 25px;
}
.btn {
    cursor: pointer;
    border: 1px solid transparent;
    padding: .375rem .75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: .25rem;
    transition: color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out;
}
.btn-dark:hover {
    color: #fff;
    background-color: #23272b;
    border-color: #1d2124;
}
.btn-dark {
    color: #fff;
    background-color: #343a40;
    border-color: #343a40;
}