<html xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers" data-namespace-typo3-fluid="true">

<div class="row">
    <div class="col-12">
        <div class="p-3 mb-2 bg-light text-dark">
            <f:form action="search" additionalAttributes="{role: 'form'}" method="get">
                <div class="input-group mb-3">
                    <f:form.textfield name="search" value="{search}" class="form-control" />
                    <f:form.submit value="Search" class="btn btn-outline-secondary" />
                </div>
            </f:form>
        </div>
    </div>
</div>