Hello,
I have just tested your site now and it is working fine at my end, here is the video for you: https://streamable.com/oeklwz
I can see you have activated server caches as well: https://ibb.co/2S69Vgt
Sometimes it happens because of the cache and normally it happens when ever first load the site on any fresh new browser and it is called browser rendering, This is because when the browser loads the page, it reads the HTML document from the top to the bottom, from the left to the right. When reading the HTML document, the browser would have read the whole DOM before reaching your CSS and JS scripts and executing them.
The rendering engine:
The responsibility of the rendering engine as well… Rendering, that is the display of the requested contents on the browser screen.
By default, the rendering engine can display HTML and XML documents and images. It can display other types of data via plug-ins or extension; for example, displaying PDF documents using a PDF viewer plug-in. However, in this chapter we will focus on the main use case: displaying HTML and images that are formatted using CSS.
Rendering engines:
Different browsers use different rendering engines: Internet Explorer uses Trident, Firefox uses Gecko, Safari uses WebKit. Chrome and Opera (from version 15) use Blink, a fork of WebKit.
So try to clear the cache of the server and use high speed Internet to access your site.
Best Regards.
.
