add new html theme guide
diff --git a/docs/index.html b/docs/index.html
index b62edfd..f5f3e8a 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -102,16 +102,19 @@
<a href="best_practice_for_newline_in_latex_table.pdf" class="normal-link">Best Practice for newline in LaTeX table</a>
</li>
<li>
- <a href="https://haozhu233.github.io/kableExtra/bookdown/index.html" class="normal-link">Using kableExtra in Bookdown<sup><span style="border-radius: 2px; padding: 1px; background-color: #d14; font-size: 8px; color: #fff">New~</span></sup></a>
+ <a href="https://haozhu233.github.io/kableExtra/bookdown/index.html" class="normal-link">Using kableExtra in Bookdown</a>
</li>
<li>
- <a href="using_kableExtra_in_radix.html" class="normal-link">Using kableExtra in Radix<sup><span style="border-radius: 2px; padding: 1px; background-color: #d14; font-size: 8px; color: #fff">New~</span></sup></a>
+ <a href="using_kableExtra_in_radix.html" class="normal-link">Using kableExtra in Radix</a>
</li>
<li>
- <a href="save_kable_and_as_image.html" class="normal-link">Save kable and Use them as images in rmarkdown<sup><span style="border-radius: 2px; padding: 1px; background-color: #d14; font-size: 8px; color: #fff">New~</span></sup></a>
+ <a href="save_kable_and_as_image.html" class="normal-link">Save kable and Use them as images in rmarkdown</a>
</li>
<li>
- <a href="kableExtra_and_xml2.html" class="normal-link">Use kableExtra and xml2 in the hard way!<sup><span style="border-radius: 2px; padding: 1px; background-color: #d14; font-size: 8px; color: #fff">New~</span></sup></a>
+ <a href="kableExtra_and_xml2.html" class="normal-link">Use kableExtra and xml2 in the hard way!</a>
+ </li>
+ <li>
+ <a href="new_html_themes.html" class="normal-link">Contributing Additional HTML Table Themes to kableExtra<sup><span style="border-radius: 2px; padding: 1px; background-color: #d14; font-size: 8px; color: #fff">New~</span></sup></a>
</li>
</ul>
</div>