vaultwarden/web-vault/app/settings/views/settingsDelete.html

<div class="modal-header">
    <button type="button" class="close" ng-click="close()" aria-label="Close"><span aria-hidden="true">&times;</span></button>
    <h4 class="modal-title" id="deleteAccountModelLabel"><i class="fa fa-trash"></i> Delete Account</h4>
</div>
<form name="deleteAccountForm" ng-submit="deleteAccountForm.$valid && submit(model)" api-form="submitPromise">
    <div class="modal-body">
        <p>Continue below to delete your account and all associated data.</p>
        <div class="callout callout-warning">
            <h4><i class="fa fa-warning"></i> Warning</h4>
            Deleting your account is permanent. It cannot be undone.
        </div>
        <div class="callout callout-danger validation-errors" ng-show="deleteAccountForm.$errors">
            <h4>Errors have occurred</h4>
            <ul>
                <li ng-repeat="e in deleteAccountForm.$errors">{{e}}</li>
            </ul>
        </div>
        <div class="form-group" show-errors>
            <label for="masterPassword">Master Password</label>
            <input type="password" id="masterPassword" name="MasterPasswordHash" ng-model="model.masterPassword" class="form-control"
                   required api-field />
        </div>
    </div>
    <div class="modal-footer">
        <button type="submit" class="btn btn-primary btn-flat" ng-disabled="deleteAccountForm.$loading">
            <i class="fa fa-refresh fa-spin loading-icon" ng-show="deleteAccountForm.$loading"></i>Delete
        </button>
        <button type="button" class="btn btn-default btn-flat" ng-click="close()">Close</button>
    </div>
</form>