Older Posts & Newer Posts Not Showing Up

Hello,

I’m using Oriental Writing since a few days ago, and yesterday I just noticed that “Older Posts” and “Newer Posts” not showing up on Index and Categories.

But the “Next Post” and “Previous Post” on Post is showing up correctly.

I checked this and that. ??

At first, I try to increase the font size on style.css into 2.6em, but it looks like not the correct approach.

I looked at the Source Code of HTML and found ot that the “Older Posts” and “Newer Posts” is there, but not showing up on human eyes. ??

After trial and error (I’m not a good programmer for sure), I manage to make those showing up by adding height: 50px on the style.css

#content .nav-previous { float: left; height: 50px; width: 50%; }
#content .nav-next { float: right; text-align: right; height: 50px; width: 50%; }

Maybe this is not the best solution, but at least at this moment the “Older Posts” and “Newer Posts” is showing up.

Waiting for better solution for sure. ??

Thank you.

Note:
– I already post this issue on Theme Creator’s website, but maybe this section is the correct one (Sorry).
– English is not my primary language, so please accept my apologize for grammar or syntax error. ??
– You may look for the result at https://www.tionghoa.com