For Win10 and Chrome (both fully updated) on a laptop, if the user changes the default Display Setting "Scale and layout -> Change the size of text, apps, and other items" from the default 125% to 100%, then the play button (right-pointing triangle) is no longer displayed. There is no problem in MS-Edge.
Here is an example (I split it into 2 lines because a single full line gets garbled by your forum):
https://xcserver004.xcircular.com/xCircular/XCBuild/XCAssets/ShuferSal_E432E391
/Assets/819f05b6-b6b4-4bca-8a13-c3df9fac2103\Files\index.html
TIA,
mlavie
Here is an example (I split it into 2 lines because a single full line gets garbled by your forum):
https://xcserver004.xcircular.com/xCircular/XCBuild/XCAssets/ShuferSal_E432E391
/Assets/819f05b6-b6b4-4bca-8a13-c3df9fac2103\Files\index.html
TIA,
mlavie