The more complicated way is by modifying your user agent.
Context: In the olden days, sites used to present different pages to mobile or computers (mobile site URLs began "m."). Nowadays they present one page, which is served differently dependent upon the user agent of the reader. One can - in some cases - modify the user agent that the server sees.
Method: In Safari on my mac (other browsers and other types of computer are available, and will have similar settings) I go to "Safari Settings" and on the "General" sheet, at the bottom, there is a checkbox for "Show features for web developers" - click this box so that it gets a tick in it:
Close Safari and open it again, then there should be a "Develop" Menu, from this menu one may choose "User Agent", and a sub-menu opens up, from which one may choose.
Recovery is the reverse: go back to the "Develop" menu and select the Default User Agent, and then go back to Safari settings and deselect the "Show features for web developers" box. Close and reopen Safari to return to your normally scheduled programming.
Thanks. I tried the 'm' trick, but that didn't work. I then went into dev mode (says inspect element on PC) and was able to toggle it there into mobile mode (toggle), but could figure out how to save it, so when I came out of dev mode it reverted back I'm using Opera.