Ghost/ghost/admin/app/templates/settings/design/change-theme.hbs

<section class="gh-canvas">
    <GhCanvasHeader class="gh-canvas-header">
        <h2 class="gh-canvas-title" data-test-screen-title>Themes</h2>
        <section class="view-actions">
            <button type="button" class="mr4 gh-btn {{if this.showAdvanced "gh-btn-green"}}" {{on "click" this.toggleAdvanced}}><span>Advanced</span></button>
            <button type="button" class="gh-btn gh-btn-primary" {{on "click" this.themeManagement.upload}}><span>Upload theme</span></button>
        </section>
    </GhCanvasHeader>

    <section class="view-container">
        {{#if this.showAdvanced}}
            <div class="gh-themes-container-labs">
                <GhThemeTableLabs @themes={{this.themes}} />
            </div>
        {{/if}}

        <div class="gh-theme-directory-container-labs">
            <div class="theme-directory-labs">
                {{#each this.marketplaceThemes as |theme|}}
                    <LinkTo @route="settings.design.change-theme.view" @model={{theme.name}} class="td-item">
                        <div class="gh-theme-browser">
                            <span class="gh-theme-browser-button"></span>
                        </div>
                        <div class="td-item-screenshot-labs relative">
                            <img style="object-fit:contain;" src={{theme.image}} alt="{{theme.name}} Theme" />
                        </div>
                        <div class="td-item-desc">
                            <div>{{theme.name}}</div>
                            <span>• {{theme.category}}</span>
                        </div>
                    </LinkTo>
                {{/each}}
            </div>
        </div>
    </section>
</section>

<section class="gh-theme-directory-footer-container">
    <div class="gh-theme-directory-footer">
        See more themes, free and premium, in <a href="https://ghost.org/themes/" target="_blank" rel="noopener noreferrer" class="link">our official marketplace →</a>
    </div>
</section>