Is there a reason why MDN Docs and Apple’s documentation on configuring web list one of the link elements for apple-touch-icon without the sizes attribute?

<link rel="apple-touch-icon" href="touch-icon-iphone.png">


<link rel="apple-touch-icon" sizes="152x152" href="touch-icon-ipad.png">
<link rel="apple-touch-icon" sizes="180x180" href="touch-icon-iphone-retina.png">
<link rel="apple-touch-icon" sizes="167x167" href="touch-icon-ipad-retina.png">

And why the link element with sizes=”180×180″ lies in the middle of the code in these websites? Is there anything that I’m missing?

Didn’t try anything.