thurdataOrderform/includes/domains/eppcode.tpl

<div class="modal fade" id="modal-epp-code">
    <div class="modal-dialog modal-dialog-centered">
        <div class="modal-content">
            <div class="modal-header d-block">
				<h4 class="modal-title">
					<button type="button" class="close" data-dismiss="modal" aria-label="{$LANG.orderForm.close}">
						<span aria-hidden="true">&times;</span>
					</button>
					<span>{lang key='orderForm.authCode'}</span>
				</h4>
            </div>
            <div class="modal-body">
                <p>{lang key='orderForm.authCodeTooltip'}</p>
                <div class="form-group">
                    <label for="inputAuthCode">{lang key='orderForm.authCode'}</label>
                    <input type="text" class="form-control" name="eppModal" data-trigger="manual" id="inputAuthCode" placeholder="{lang key='orderForm.authCodePlaceholder'}" data-toggle="tooltip" data-placement="left" title="{lang key='orderForm.required'}" />
                </div>
            </div>
            <div class="modal-footer">
				<span class="input-group-btn">
					<button type="button" class="btn btn-primary data-loader" data-epp-submit>
						<span class="loader w-hidden">
							<i class="fas fa-fw fa-spinner fa-spin"></i> {lang key="pleasewait"}
						</span>	
						<span class="data-btn">{lang key="confirm"}</span>				
					</button>
				</span>
                <button type="button" class="btn btn-default" data-dismiss="modal">{lang key="orderForm.cancel"}</button>
            </div>
        </div>
    </div>
</div>