jQuery Forum

You should always mention what browser or device you see the problem on.

pointing mouse on "Scarpe" or "Sportivo" you can see under the image a 1/2px orange line, that is the background on :hover. But all images are 80X80pixel and not in all you can see the bug. Infatc: Abbigliamento, Accessori e Intimo have not the orange line on :hover.

I do not understand why...

What browser or device?

I do see it on Firefox and Chrome.

Your <li>s are 81.375px high.

I don't know what is causing it.

On Chrome it is 81 px. It's determined by your <a> tag padding, border, etc. <a> tag is 58px + 11 padding + 11 padding + 1 border.

Use Google Developer Tools it will let you see where the numbers come from, and good luck!

Did you try removing your custom CSS?

I found this solution:

but i prefered understood what caused it...

listview thumbnails aren't meant to fit the height of the item exactly. The thumbnail is the size of the thumbnail. The height of the item is dependent on your content (which includes the thumbnail). You just stumbled on a height that would fit exactly on those items that have only a heading (not a paragraph) on certain browsers.

On those items with only a heading, the image is taller than the <a> tag and it's children (heading) and so the height of the item matches the image exactly because the image is the tallest element in the list item.

On those items with a heading and paragraph, the padding adds up to just a bit more, and so you see space below the image because now the <a> tag is the tallest element in the list item.

This would be more obvious if your paragraph was longer and had to flow onto a second line.

You get slightly different results on different browsers because different browsers have different default fonts, with different characteristics. 

It's not a jQuery Mobile problem at all - just basic CSS. It's doing what it is supposed to do. You need to create CSS to give the appearance you want, rather than relying on an accident of heights matching-up in one particular circumstance.