          <div class="row justify-content-center">
            <div class="col-md-6 bg-card">
              <div class="tool-header">
                <span class="material-symbols-rounded tool-header-icon security">verified</span>
                <span class="tool-header-text" th:text="#{validateSignature.header}"></span>
              </div>
              <form id="pdfForm" th:action="@{'api/v1/security/validate-signature'}" method="post" enctype="multipart/form-data">
                <div class="mb-3">
  