Post text size
The blog post text size is the default website global font size se in Theme options > Typography > Advanced > The base font size of the theme.
However, if you want to customize the posts font size only you can add this code snippet into Theme options > Layout > Advanced > Custom css:
.single-post .entry-content {
font-size: 18px;
}Post Title size
The Blog Title font size uses the default site Heading font size set in Theme options > Typography > Advanced, however, if you are looking to customize the default Blog posts Title font size only you can use this code snippet into Theme options > Layout > Advanced > Custom header tags include:
<style>
.single-post .pix-post-title,
.single-post #pix-intro-sliding-text .h3 {
font-size: 24px !important;
}
</style>For detailed information about theme typography you can check this article:
https://essentials.pixfort.com/knowledge-base/theme-typography/
