Change error class in yii2 field?

Question

Yii

The default field is a div block with the class "has-error" or "has-access", how can I change these classes?

<div class="form-group field-post-title required has-error">

<label class="control-label" for="post-title">Title</label>
<input type="text" id="post-title" class="form-control" name="Post[title]" aria-required="true" aria-invalid="true">

<div class="help-block">Title cannot be blank.</div>
</div>

Answer 1

\yii\widgets\ActiveForm::begin([
    'errorCssClass' => 'my-css-class'
]);