Do you mean the content loads without borders, colour or formatting? I too can replicate this issue in Google Chrome. Reloading doesn't help.
The style sheet probably isn't loading in Chrome. When I click on the HTTPS lock in the address bar in Chrome, it shows the following error: "Your connection to this site is not fully secure".
In Mozilla Firefox there is intermittent lack of formatting when I click 'Back' to a previous page. However, it appears to correct itself after the page is reloaded.