Hello @fantasy_5,
Thanks for posting in!
I have checked your site and it seems that in Appearance > Customize > Additional CSS, you have added this custom CSS which has affected all the site pages.
body.x-navbar-fixed-top-active .x-navbar-wrap {
height: 0px;
}
You may need to add additional code like the example below to increase the height of the navbar for at least 100px
on the blog and single post pages.
body.x-navbar-fixed-top-active.blog .x-navbar-wrap,
body.x-navbar-fixed-top-active.single-post .x-navbar-wrap{
/* your styling height here */
}
The code above serves as an example code. Feel free to modify it when needed. Please note that custom coding is beyond the scope of our support. You must maintain any custom coding to ensure it will still work after any updates or does not create any issues or incompatibility in the future.
Best Regards.