Product Tabs

Go to Storefront -> My Themes -> Customize. (If your store is a new store, you may need to go to Channel Manager -> Themes -> Edit Theme)

In the Theme Editor -> Go to Product Detail Page -> Product Tabs

** Sample Content of Product Description

After that, input sample content below:

<p>Nam tempus turpis at metus scelerisque placerat nulla deumantos solicitud felis. Pellentesque diam dolor, elementum etos lobortis des mollis ut risus. Sedcus faucibus an sullamcorper mattis drostique des commodo pharetras loremos.Donec pretium egestas sapien et mollis.</p>
<div class="description-2col">
    <div class="des2col-item">
        <div class="des2colItem-img"><img src="https://cdn11.bigcommerce.com/s-puuf0ho3a3/images/stencil/original/image-manager/description-image-1.jpg" alt="Description Image" /></div>
        <div class="des2colItem-content">
            <div class="des2colItem-container">
                <h4 class="des2colItem-title">Sample Unordered List</h4>
                <p class="des2colItem-featured">Nam tempus turpis at metus scelerisque placerat nulla deumantos solicitud felis. Pellentesque diam dolor, elementum etos lobortis des mollis ut risus. Sedcus faucibus an sullamcorper mattis drostique.</p>
                <ul>
                    <li>Comodous in tempor ullamcorper miaculis.</li>
                    <li>Pellentesque vitae neque mollis urna mattis laoreet.</li>
                    <li>Divamus sit amet purus justo.</li>
                    <li>Proin molestie egestas orci ac suscipit risus posuere loremous.</li>
                </ul>
            </div>
        </div>
    </div>
</div>
<p class="description-bottom">Praesent vestibulum congue tellus at fringilla. Curabitur vitae semper sem, eu convallis est. Cras felis nunc commodo eu convallis vitae interdum non nisl. Maecenas ac est sit amet augue pharetra convallis nec danos dui. Cras suscipit quam et turpis eleifend vitae malesuada magna congue. Damus id ullamcorper neque. Sed vitae mi a mi pretium aliquet ac sed elit. Pellentesque nulla eros accumsan quis justo at tincidunt lobortis denimes loremous.</p>
<div class="description-2col">
    <div class="des2col-item des2col-item-2">
        <div class="des2colItem-img"><img src="https://cdn11.bigcommerce.com/s-puuf0ho3a3/images/stencil/original/image-manager/description-image-2.jpg" alt="Description Image" /></div>
        <div class="des2colItem-content">
            <div class="des2colItem-container">
                <h4 class="des2colItem-title">Sample Unordered List</h4>
                <p class="des2colItem-featured">Nam tempus turpis at metus scelerisque placerat nulla deumantos solicitud felis. Pellentesque diam dolor, elementum etos lobortis des mollis ut risus. Sedcus faucibus an sullamcorper mattis drostique.</p>
                <ul>
                    <li>Comodous in tempor ullamcorper miaculis.</li>
                    <li>Pellentesque vitae neque mollis urna mattis laoreet.</li>
                    <li>Divamus sit amet purus justo.</li>
                    <li>Proin molestie egestas orci ac suscipit risus posuere loremous.</li>
                </ul>
            </div>
        </div>
    </div>
</div>
<div class="description-blockQuote">
    <h5 class="desBlockQuote-title">Sample Paragraph Text</h5>
    <p class="desBlockQuote-des">Praesent vestibulum congue tellus at fringilla. Curabitur vitae semper sem, eu convallis est. Cras felis nunc commodo eu convallis vitae interdum non nisl. Maecenas ac est sit amet augue pharetra convallis nec danos dui. Cras suscipit quam et turpis eleifend vitae malesuada magna congue.</p>
</div>
<div class="description-oneList">
    <div class="desOneList-item">
        <p class="desOneList-title">Sample Paragraph Text</p>
        <p class="desOneList-content">Praesent vestibulum congue tellus at fringilla. Curabitur vitae semper sem, eu convallis est. Cras felis nunc commodo eu convallis vitae interdum non nisl. Maecenas ac est sit amet augue pharetra convallis nec danos dui. Cras suscipit quam et turpis eleifend vitae malesuada magna congue. Damus id ullamcorper neque. Sed vitae mi a mi pretium aliquet ac sed elit. Pellentesque nulla eros accumsan quis justo at tincidunt lobortis denimes loremous. Suspendisse vestibulum lectus in lectus volutpat, ut dapibus purus pulvinar. Vestibulum sit amet auctor ipsum.</p>
    </div>
</div>

Input in Theme Editor limit 64 characters.

When you are happy with your changes, don't forget click Save and Publish to repackage the edited theme.