Image won't align center

Here is the link to the https://partythemeideas.org/how-to-make-spinach-pie/

Isn’t it because you have a caching plugin?

Hi Andrew!
I have emptied the cache, but still the images don’t align center.

Also, I have minification disabled.

If you’re not using a Child Theme, and if the theme doesn’t have a designated section of the dashboard for CSS modifications then install this Custom CSS Manager plugin https://www.ads-software.com/plugins/custom-css-manager-plugin

Then use its “CSS Code” section of the dashboard to hold your CSS modifications:

Alternatively use your Child Theme style.css file to hold your CSS modifications:

.aligncenter {
    text-align: center;
}

Also find your theme support here: https://prettydarncute.com/pre-made-theme-support/

Thank you Andrew. I installed themejunkie custom css manager and added the code above. Now the images work perfectly! Thanks a lot!