HTML <details> do not always show on Safari

I have a site with holiday homes: www.vakantiehuisverhuur.eu. On this page availability is shown with button ‘Beschikbaarheid’. It then shows < details > for each month and clicking on it should show the month expanded. And it does except on Safari on iPad and iPhone.

I have a backup site www.belard.nl with the same content. It is odd but on this site Safari does what is has to do: details are shown.

I copied the coding from belard.nl to vakantiehuisverhuur.eu so they were exactly the same. But unfortunately details still do not show.

I have no idea anymore where to look for, settings maybe? Does anyone possibly have a clue where to look for?

Cheers, Rudolph Smits (NL)

Maybe important: I have Rapidweaver Classic, latest release.

I asked Grok on X for help. It mentioned the < summary > instruction. I tried to add this on one house and look, the wonder happend: Safari showed the < details >. Tomorrow I try the other houses.

Why one site was okay and an other not, I don’t know. But it matters less now. I feel relieved. :wink:

< details > < summary >Open for more info…< /summary >my text availability< /details >

Issue closed…