This page shows a spinner on page load.
In most cases spinner only last one to two seconds. However, they can last much longer depending on the the background process being executed which is causing the spinner to appear. Your network speed may also influence the frequency and duration of spinners.
Practice writing an automated test that checks that the spinner is no longer visible.
HINT: The class name that pertains to the hidden spinner is spinner-hidden!
Want to slow down the spinner!? Try using a custom network throttling profile that uses a download speed of 40 kbit/s or less.