Admin bar appearing as blank in my theme

I ran into a similar problem with my own theme. The cause ended up being the styles I was applying to all ul elements. Check to see if you’ve set the position style for all ul elements.

Here is a description of what I found: Admin Bar Does Not Display Correctly

Thank for supported me.

I have tried to fix as your recommendation but didn’t solve it.
Can you post your CSS code here?

Thanks again

Add the code
<?php wp_footer(); ?>
in the footer

Thank you very much Alenhua.Now it’s working

had the same issue – wp_footer is the trick – legendary.