<textarea name="" id="" rows="4" cols="50" placeholder="Required" aria-label="Text Area"></textarea>
<textarea class="form-control" name="" id="" rows="4" cols="50" placeholder="Required" aria-label="Text Area"></textarea>
<!-- SUCCESS -->
<textarea class="form-control is-valid" name="" id="" rows="4" cols="50" placeholder="Required" aria-label="Text Area"></textarea>
<!-- SUCCESS WITH MESSAGE -->
<textarea class="form-control is-valid" name="" id="" rows="4" cols="50" placeholder="Required" aria-label="Text Area"></textarea>
<div class="valid-feedback">Text</div>
<!-- ERROR WITH MESSAGE -->
<textarea class="form-control is-invalid" name="" id="" rows="4" cols="50" placeholder="Required" aria-label="Text Area" required></textarea>
<div class="invalid-feedback">Text</div>