Hi there,
I checked your website and found out that for some reason the generated CSS is rendered incorrectly. For example, the width of the prompt should be 100% in the code but it has this big random numbers:
.my-prompt .x-prompt-section-message {
width: 100{482b3925abee60e7888b807152317eff13a1c348ad7f5f9d6b2e677b21005ccc};
display: block;
font-family: "Open Sans",serif;
font-size: 15px;
}
There might be a bad update case. I suggest that you delete the Cornerstone plugin and install it again by going to X > Overview and wait for few seconds and then go to plugins menu to see the latest version.
The other possible cause might be related to cache. If you have any kind of cache plugin or cache system on your hosting service provider please kindly purge the cache and deactivate the cache plugin.
Also, test if there is no 3rd party plugin interfering with the CSS code generation of the theme. You can test that by deactivating them and see the result. The other thing is that you can test if the changes you have made in the Child Theme is safe for this update or not. Test it by changing the theme to parent one and test the case.
If you still have problems regarding this kindly get back to us with the URL/User/Pass of your website using the Secure Note functionality of the post to follow up the case.
Thank you.