lcome__header ms-bgColor-neutralLighter">
        <img width="90" height="90" src="../../appPackage/assets/logo-filled.png" alt="Contoso" title="Contoso" />
        <h1 class="ms-font-su">Welcome</h1>
    </header>
    <section id="sideload-msg" class="ms-welcome__main">
        <h2 class="ms-font-xl">Please <a target="_blank" href="https://learn.microsoft.com/office/dev/add-ins/testing/test-debug-office-add-ins#sideload-an-office-add-in-for-testing">sideload</a> your add-in to see app body.</h2>
    </sect